Challenge Questions Blog

Challenge Questions

Stop in and exercise your brain. Talk about this month's Challenge from Specs & Techs or similar puzzles.

So do you have a Challenge Question that could stump the community? Then submit the question with the "correct" answer and we'll post it. If it's really good, we may even roll it up to Specs & Techs. You'll be famous!

Answers to Challenge Questions appear by the last Tuesday of the month.

Previous in Blog: Explorer Explanation: Newsletter Challenge (February 2020)   Next in Blog: Disconcerting Division: Newsletter Challenge (April 2020)
Close
Close
Close
36 comments

Word War: Newsletter Challenge (March 2020)

Posted February 29, 2020 5:01 PM
Pathfinder Tags: challenge question guess puzzle word

This month's IEEE GlobalSpec newsletter challenge is:

A teacher writes six words on a board: “cat dog has max dim tag.” She gives three students, Donald, Elizabeth and Fred, each a piece of paper with one letter from one of the words. Then she asks, “Donald, do you know the word?” He replies yes without hesitating. She asks, “Elizabeth, do you know the word?” She thinks for a minute and replies yes. Then she asks Fred the same question. He thinks about it and then replies yes.

What is the word?

And the answer is:

Dog. Donald knows right away because he has one of the unique letters that only appear once in all the words: c o h s x i. So, we know the word is not “tag.” All of these unique letters appear in different words, except for “h” and “s” in “has,” and Elizabeth can figure out what the word is from the unique letters that are left: t, g, h, s. This eliminates “max” and “dim.” Fred can then narrow it down the same way. Because there is only one unique letter left, the letter “d,” the word must be “dog.”

Reply

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Guru
Engineering Fields - Marine Engineering - New Member

Join Date: May 2007
Location: Australia.
Posts: 1642
Good Answers: 81
#1

Re: Word War: Newsletter Challenge (March 2020)

02/29/2020 7:39 PM

Max (most) dim (unclear) has the most unclear meaning, so (pause see out) side, and we have (cat dog has tag) = pause see out side = pawscout = pet GPS collar.

Word Pawscout.

Reply
Guru
Engineering Fields - Marine Engineering - New Member

Join Date: May 2007
Location: Australia.
Posts: 1642
Good Answers: 81
#8
In reply to #1

Re: Word War: Newsletter Challenge (March 2020)

03/01/2020 8:54 PM

(each a piece of paper with one letter from one of the words.)

Pawscout = Answer tag.

Reply
Guru
Engineering Fields - Marine Engineering - New Member

Join Date: May 2007
Location: Australia.
Posts: 1642
Good Answers: 81
#24
In reply to #8

Re: Word War: Newsletter Challenge (March 2020)

03/04/2020 11:11 PM

At the end of the question there is an emphasis on the time taken, the emphasis being that they took time, (paused) to (see out) the answer.

The letter was possibly "a", so they had to pause and think logically.

Reply
Guru
Engineering Fields - Marine Engineering - New Member

Join Date: May 2007
Location: Australia.
Posts: 1642
Good Answers: 81
#25
In reply to #24

Re: Word War: Newsletter Challenge (March 2020)

03/05/2020 1:14 AM

Logical thinking? “a”. Cat (max = and most likely) has tag. Answer dog.

Reply
Guru
Engineering Fields - Marine Engineering - New Member

Join Date: May 2007
Location: Australia.
Posts: 1642
Good Answers: 81
#26
In reply to #25

Re: Word War: Newsletter Challenge (March 2020)

03/05/2020 6:16 AM

Logical thinking? “a”. Cat (max = and most likely) has tag.

most likely with "a" is the tag given to the students? Answer cat.

Reply
Guru
Engineering Fields - Marine Engineering - New Member

Join Date: May 2007
Location: Australia.
Posts: 1642
Good Answers: 81
#27
In reply to #26

Re: Word War: Newsletter Challenge (March 2020)

03/05/2020 7:49 PM

PS.

Donald knows that the teacher has a cat named max?

Cat has max tag = name tag? therefore cat has name tag "a". Answer cat.

Reply Score 1 for Off Topic
3
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9752
Good Answers: 1120
#2

Re: Word War: Newsletter Challenge (March 2020)

02/29/2020 8:13 PM

cat dog has max dim tag

Number of times each letter appears in list, 1 c, 4 a, etc.

cat = 142

dog = 112

has = 132

max = 231

dim = 212

tag = 242

The word is "dog". On student got d, one got o, each of which only appears once. Fred got g, which appears twice, but knowing the other two said yes, he knew it had to be dog and not tag.

Reply Good Answer (Score 3)
Guru
Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 15513
Good Answers: 959
#6
In reply to #2

Re: Word War: Newsletter Challenge (March 2020)

03/01/2020 12:08 PM

Bravo, and in only three hours.

__________________
"Don't disturb my circles." translation of Archimedes last words
Reply
Guru
Hobbies - CNC - New Member Hobbies - DIY Welding - New Member Engineering Fields - Electromechanical Engineering - New Member

Join Date: Aug 2007
Posts: 23578
Good Answers: 419
#9
In reply to #2

Re: Word War: Newsletter Challenge (March 2020)

03/01/2020 9:27 PM

Using the number of times a letter appears, You just used a procedure for cryptologist use to break code... kudos...

__________________
“ When people get what they want, they are often surprised when they get what they deserve " - James Wood
Reply
7
Power-User

Join Date: Oct 2011
Posts: 134
Good Answers: 19
#12
In reply to #2

Re: Word War: Newsletter Challenge (March 2020)

03/02/2020 5:23 AM

Unfortunately, you are wrong - the actual numbers are:

cat = 142

dog = 212

has = 141

max = 241

dim = 212

tag = 242

Since Donald answered without hesitation, he could have only a letter that appears ones - this means he could have only one of the following:

"c" from "cat"

"o" from "dog"

"h" or "s" from "has"

"x" from "max"

"i" from "dim"

which eliminates the word "tag" from the list. By doing that, the new list is:

cat = 131

dog = 211

has = 131

max = 231

dim = 212

Since Elizabeth didn't answer without hesitation she couldn't have "h" or "s" from "has". She had to think but she could give a positive answer by thinking, so she could have only the following letters:

"t" from "cat"

"g" from "dog"

which appear only ones in the new list. So, this shortens the list to the first to words ("cat" or "dog").

Now, Fred could follow the above thinking and give a positive answer only if he had:

"a" - which could be only from "cat"

"d" - which could be only from "dog"

As you can see there are two possible solutions:

1) Donald had "c", Elizabeth had "t" and Fred had "a"

2) Donald had "o", Elizabeth had ""g" and Fred had "d"

Reply Good Answer (Score 7)
Guru
Australia - Member - New Member

Join Date: Feb 2008
Location: Australia
Posts: 2172
Good Answers: 253
#13
In reply to #12

Re: Word War: Newsletter Challenge (March 2020)

03/02/2020 5:47 AM

Congratulations, you responded before I was able to highlight the error in post 2 about there being 2 x "d" (Dog and Dim), but there was no way that I would have got the solution that you suggest. Maybe I need to go back to school.

Though I believe that some interpretation of the question as posed would eliminate "dog" since from your reply that would have two letters from the word distributed among the three students.

__________________
Just an Engineer from the land down under.
Reply
Guru
Popular Science - Cosmology - Let's keep knowledge expanding Engineering Fields - Retired Engineers / Mentors - Hobbies - HAM Radio - New Member

Join Date: Dec 2006
Location: North America, Earth
Posts: 4484
Good Answers: 106
#14
In reply to #12

Re: Word War: Newsletter Challenge (March 2020)

03/02/2020 9:25 AM

Good thinking - GA. You made some English errors though:

"which appear only ones once in the new list. So, this shortens the list to the first to two words ("cat" or "dog")."

__________________
“I would rather have questions that can't be answered than answers that can't be questioned.” - Richard Feynman
Reply
Power-User

Join Date: Oct 2011
Posts: 134
Good Answers: 19
#18
In reply to #14

Re: Word War: Newsletter Challenge (March 2020)

03/03/2020 2:23 AM

Wow! Look what can do a night with almost no sleep (when you are not young anymore)! Although English is not my native language I never made such a mistake like using "ones" instead of "once"! "To" instead of "two" is just a typo error (you can also find a correct "two" in my post) but I realize now that I didn't even reviewed my text (as if being in a hurry, which was not the case). Again, wow!

Reply Off Topic (Score 5)
Power-User

Join Date: Oct 2011
Posts: 134
Good Answers: 19
#20
In reply to #18

Re: Word War: Newsletter Challenge (March 2020)

03/03/2020 2:34 AM

Ooops! I did it again! "I didn't... reviewed"!?! I must go to bed.

Reply Off Topic (Score 5)
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9752
Good Answers: 1120
#15
In reply to #12

Re: Word War: Newsletter Challenge (March 2020)

03/02/2020 9:53 AM

You're right.

Good catch, good analysis, good answer!

Reply
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33317
Good Answers: 1810
#16
In reply to #12

Re: Word War: Newsletter Challenge (March 2020)

03/02/2020 1:51 PM

Catdog...

__________________
All living things seek to control their own destiny....this is the purpose of life
Reply
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33317
Good Answers: 1810
#31
In reply to #12

Re: Word War: Newsletter Challenge (March 2020)

03/15/2020 12:29 AM

Who's eliminating the words? None of the students know what the other student has guessed, except the third student, who by deductive reasoning has concluded that for the first two students to say they knew the word, the letter they received would be used only once, in one word....They are all guessing at the same word....That word would have to be has, as it is the only word with two single use letters...there can't be two possibilities for the third student to say he knows the word...

__________________
All living things seek to control their own destiny....this is the purpose of life
Reply
Guru
Engineering Fields - Marine Engineering - New Member

Join Date: May 2007
Location: Australia.
Posts: 1642
Good Answers: 81
#32
In reply to #31

Re: Word War: Newsletter Challenge (March 2020)

03/15/2020 3:10 AM

Do you think a teacher would give a letter that is only used once, or do you think she would be requiring logical thinking? Sorry just realised a letter surrounded by once used letters? Do you think she logically selected the order she ask the students, has that anything to do with the answer you think?

Reply
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33317
Good Answers: 1810
#33
In reply to #32

Re: Word War: Newsletter Challenge (March 2020)

03/15/2020 1:44 PM

Only so far as the student with 'a' used in more than one word, would not yield a definitive answer without the first two students answering in the affirmative...so the 'h' and 's' are interchangeable as long as they are in the first two slots...In order for each of the three students to know the word, there has to be only one possibility...Given the words allocated there can only be one possibility of all three students knowing the word....

__________________
All living things seek to control their own destiny....this is the purpose of life
Reply
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33317
Good Answers: 1810
#3

Re: Word War: Newsletter Challenge (March 2020)

02/29/2020 10:06 PM
__________________
All living things seek to control their own destiny....this is the purpose of life
Reply
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21022
Good Answers: 795
#4
In reply to #3

Re: Word War: Newsletter Challenge (March 2020)

03/01/2020 9:41 AM

An even shorter sentence using all 26 letters is "Pack my box with five dozen liquor jugs."

__________________
In vino veritas; in cervisia carmen; in aqua E. coli.
Reply Score 1 for Off Topic
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9752
Good Answers: 1120
#5
In reply to #4

Re: Word War: Newsletter Challenge (March 2020)

03/01/2020 12:08 PM

If there are 3 students, I guess the word "my" is out...

Reply
Guru

Join Date: Dec 2009
Location: Land of Shining Waters
Posts: 916
Good Answers: 35
#7

Re: Word War: Newsletter Challenge (March 2020)

03/01/2020 7:08 PM

The answer came immediately to Donald because as an agnostic dyslexic insomniac he often lies awake at night wondering if there is a dog.

__________________
It is easier to let the cat out of the bag than to put the cat back in the bag.
Reply
Guru
Popular Science - Cosmology - Let's keep knowledge expanding Engineering Fields - Retired Engineers / Mentors - Hobbies - HAM Radio - New Member

Join Date: Dec 2006
Location: North America, Earth
Posts: 4484
Good Answers: 106
#10

Re: Word War: Newsletter Challenge (March 2020)

03/01/2020 11:43 PM

Donald "replies yes without hesitating"

Nobody knows what single letter each student got. The OP doesn't state that the three letters were from the same word.

The word is YES. It is the answer provided by all 3 students, and the only answer some teachers accept.

__________________
“I would rather have questions that can't be answered than answers that can't be questioned.” - Richard Feynman
Reply
Power-User

Join Date: Nov 2011
Posts: 249
Good Answers: 4
#11

Re: Word War: Newsletter Challenge (March 2020)

03/02/2020 2:51 AM

DOG

Reply
Guru

Join Date: Feb 2013
Posts: 716
Good Answers: 33
#17

Re: Word War: Newsletter Challenge (March 2020)

03/03/2020 1:02 AM

There is only one unique letter that stands out so strongly that Donald can guess the word "without hesitation." That is letter X. Other letters like C may be unique but would take a few seconds to make sure. Elizabeth only has to verify that her letter is compatible with X, and found in "max," to know what the word is. Her letter doesn't even have to be unique. Same with Fred.

The word is max.

__________________
canary
Reply
Power-User

Join Date: Nov 2011
Posts: 249
Good Answers: 4
#19
In reply to #17

Re: Word War: Newsletter Challenge (March 2020)

03/03/2020 2:33 AM

The question is for a one word answer . It doesn’t want an explanation .

Reply Score 2 for Off Topic
Guru

Join Date: Feb 2013
Posts: 716
Good Answers: 33
#21
In reply to #19

Re: Word War: Newsletter Challenge (March 2020)

03/03/2020 10:18 AM

You're right that the answer is one word. I prefer to show my work because that is the only way to be understood and believed. When you posted your answer, "dog", did you choose it logically, pick it at random, have a voice in your head pick it for you, find the answer somewhere on the net, or follow the lead of the other person who chose that word? Since I don't know how how you got to "dog", I neither understand nor believe you.

__________________
canary
Reply
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33317
Good Answers: 1810
#22

Re: Word War: Newsletter Challenge (March 2020)

03/04/2020 12:39 PM

There would have to be two single use letters for the first two students to answer that they knew the word, and the third was based on the first two knowing...

has.. h or s were the first two letters, and a was the third....

__________________
All living things seek to control their own destiny....this is the purpose of life
Reply Score 1 for Good Answer
Active Contributor

Join Date: Jun 2013
Location: At the center of my universe
Posts: 16
Good Answers: 5
#28
In reply to #22

Re: Word War: Newsletter Challenge (March 2020)

03/06/2020 1:50 AM

S.E.'s answer is the simplest and is based on straight forward logic. I would have given it 2 "Good" votes if it would have let me. The word is has.

__________________
Irreversible Thermodynamics is Cool
Reply
Participant

Join Date: Mar 2020
Posts: 1
#23

Re: Word War: Newsletter Challenge (March 2020)

03/04/2020 9:32 PM

No matter what 3 letters you get, you can make one of 5 words! except 'has'...

The first reply came quick so he no doubt had a 'h' or 's' he had letters that were only in one word, with the first reply so quick the others would just be confirming they has one of the other 2 letters in the word, the person with the 'a' would have taken the longest if they were the second in line!

Reply Score 1 for Good Answer
Guru
Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 15513
Good Answers: 959
#29

Re: Word War: Newsletter Challenge (March 2020)

03/06/2020 7:48 AM

There are unstated conditions in this poser for us to ascertain which of the six words the teacher wants the students to select. What if the letters given to the students are not unique? The poser does not stipulate that duplicate letters were not given to students. It still fits the given conditions that the same letter was given to all three students. The teacher was actually testing for the intellect of the students. Only Donald was sharp as a tack. We only know that "tag" was not the word anyone selected.

There is also the possibility the teacher was testing for peer pressure susceptibility in Elizabeth and Fred by giving only Donald a word identifying letter and those two failed the test.

The conditions to exclude my two propositions are reasonable to assume but they conditions are still an assumption.

__________________
"Don't disturb my circles." translation of Archimedes last words
Reply
Anonymous Poster #1
#30

Re: Word War: Newsletter Challenge (March 2020)

03/11/2020 9:52 AM

Answer is the word "has".

Reply Score 1 for Off Topic
Power-User
Hobbies - Musician - New Member Technical Fields - Technical Writing - New Member

Join Date: Nov 2012
Posts: 431
Good Answers: 6
#34

Re: Word War: Newsletter Challenge (March 2020)

03/16/2020 8:03 AM

Some great discussion on this one -- answer is now posted.

__________________
Nobody realizes that some people expend tremendous energy merely to be normal. -Camus
Reply
Guru
Australia - Member - New Member

Join Date: Feb 2008
Location: Australia
Posts: 2172
Good Answers: 253
#35

Re: Word War: Newsletter Challenge (March 2020)

03/17/2020 6:37 AM

Sorry to appear argumentative, but is the answer provided an apparent self fulfilling prophesy? There seem to be other unique solutions that are suggested and supported by similar logic that would also become self fulfilling.

In other words, are there multiple correct answers dependant on the start condition that is presented to Donald?

__________________
Just an Engineer from the land down under.
Reply
Participant

Join Date: Mar 2020
Posts: 1
#36
In reply to #35

Re: Word War: Newsletter Challenge (March 2020)

03/17/2020 2:18 PM

cat dog has max dim tag

142 212 141 241 212 242

The only word that anyone could determine/know for sure is ‘has’

It’s the only word that 2 of the 3 people could definitely know because they had one of the letters that there is only 1 of and thereby the only word it could be.

Reply Score 1 for Off Topic
Reply to Blog Entry 36 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Copy to Clipboard

Users who posted comments:

Alex. Roman (3); Anonymous Poster (1); canadianslidewinder (1); Canary (2); Ed Elton (1); Eddie1958 (1); Gadepalli Subrahmanyam (2); Hannes (1); Hooter11 (1); jdretired (7); Just an Engineer (2); phoenix911 (1); redfred (2); Rixter (3); SolarEagle (5); StandardsGuy (2); Tornado (1)

Previous in Blog: Explorer Explanation: Newsletter Challenge (February 2020)   Next in Blog: Disconcerting Division: Newsletter Challenge (April 2020)

Advertisement