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Cinq Digit Choice (Posted on 2014-09-22) Difficulty: 3 of 5
A five digit positive integer N without a leading zero is selected at random.

Determine the probability that the sum of the first digit, third digit and fifth digit of N is equal the product of its second digit and fourth digit.

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
Solutioncomputer solution (spoiler)Charlie2014-09-22 16:29:18
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