perplexus.info :: Probability : Product Crossed Square Settlement

Product Crossed Square Settlement (Posted on 2022-08-19)

N is a 7-digit positive integer whose product of the digits is 20160.

Determine the probability that the sum of the digits of N is a perfect square.

See The Solution Submitted by K Sengupta

Rating: 5.0000 (1 votes)

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re(2): Solution

Comment 5 of 5 |

(In reply to re: Solution by Jer)

Yes, I absolutely misread the problem.

But after a correct reading of the problem and changing one line of code from

if isSquare(i):

if isSquare(sod(i)):

5040 28560 0.17647058823529413

The required probability is 0.17647058823529413

Posted by Larry on 2022-08-20 08:13:24

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