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Challenge Questions

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

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

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Odometer Delight (Oct. 2026 Challenge Question)

Posted October 31, 2026 12:00 AM
Pathfinder Tags: challenge question

Edgar was excited when his new car's odometer showed 15,951 miles.

"Wow, a palindrome. That must be rare," he thought.

To his surprised, a new palindrome appeared just two hours later.

What was that number? How fast was Edgar driving?

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Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
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Re: Odometer Delight (Oct. 2026 Challenge Question)

10/31/2026 8:22 AM

The next palindrome would be 16061, 110 miles down the road. He was travelling 55 mph.

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