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Factorial Probability (Posted on 2025-04-30)

A random positive integer divisor of 20! is chosen. What is the probability that it is divisible by 100?

No Solution Yet Submitted by Danish Ahmed Khan

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Brute force confirms

| Comment 3 of 4 |

A brute force program confirms Jer's assertion:

22032 / 41040

(432)(51) / (432)(95)

0.5368421052631579

Posted by Larry on 2025-04-30 08:56:06

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