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Series Stumper: Newsletter Challenge (July 2019)

Posted June 30, 2019 5:01 PM
Pathfinder Tags: challenge question number series

This month's IEEE GlobalSpec newsletter challenge is:

Fill in the missing numbers:

8, 18, 11, 15, 5, 4, 14, 9, 19, 1, 7, 17, 6, 16, ?, ?, ?, ?, ?

And the answer is:

10, 13, 3, 12, 2

This one is solved by realizing that the number sequence is one to 19, in alphabetical order.

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SolarEagle
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#1

Re: Series Stumper: Newsletter Challenge (July 2019)

06/30/2019 5:26 PM

10, 13, 3, 12, 2.

8, 18, 11, 15, 5, 4, 14, 9, 19, 1, 7, 17, 6, 16, ? , ?, ?, ?, ?

1, 2, 3, 4, 5, 6, 7, 8, 9, 10,11,12,13,14,15,16,17,18,19

eight

eighteen

eleven

fifteen

five

four

fourteen

nine

nineteen

one

seven

seventeen

six

sixteen

ten

thirteen

three

twelve

two

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Just an Engineer
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Re: Series Stumper: Newsletter Challenge (July 2019)

07/01/2019 6:48 AM

I suspect that you have it there.

Alphabetic sequence of the numerals 1 to 19. there might be another algebraic result, but there seems nothing wrong with that logic.

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hoo8975
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#3
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Re: Series Stumper: Newsletter Challenge (July 2019)

07/02/2019 7:50 AM

Do we know that there are only 5 more numbers since there are 5 ?'s? Why not 10,13,30,31,32 or 10, 13, 3, 12, 20 with other numbers to follow? We know it does not go to forty because of sixth member.
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horace40
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#4

Re: Series Stumper: Newsletter Challenge (July 2019)

07/02/2019 9:39 AM

I am guessing 2 3 10 12 13 - because they are missing from the sequence 1 to 19.

....but can't figure out what order.

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Re: Series Stumper: Newsletter Challenge (July 2019)

07/02/2019 11:01 PM

Here is a variation: 1, 6, 10, 2, 5, 4, 9, 8, 7, 3, 11, 12, 15, 16, ?, ?, ?, ?, ?.

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Re: Series Stumper: Newsletter Challenge (July 2019)

07/04/2019 4:32 AM

18, 14, 19, 13, 17

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Re: Series Stumper: Newsletter Challenge (July 2019)

07/04/2019 11:30 AM

Yes.

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lyn
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Re: Series Stumper: Newsletter Challenge (July 2019)

07/04/2019 3:05 PM

Search: Fill in the missing numbers:

8, 18, 11, 15, 5, 4, 14, 9, 19, 1, 7, 17, 6, 16, ?, ?, ?, ?, ?
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Previous in Blog: Particle Puzzle: Newsletter Challenge (June 2019)   Next in Blog: Pilferland Puzzle: Newsletter Challenge (August 2019)

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