perplexus.info :: Just Math : Hexadecimal Digit Travail

Hexadecimal Digit Travail (Posted on 2014-12-25)

Determine the probability that a for a seven-digit positive hexadecimal integer N, the sum of the first four digits of N is equal to the product of the last three digits of N.

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

The required probability is 516504/251658240 = 21521/10485760 ~= 0.002052402
For an explanation, refer to the solution submitted by Charlie in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
re(4): computer solution	Charlie	2014-12-25 20:55:51
re(3): computer solution	Dej Mar	2014-12-25 19:16:17
re(2): computer solution	Charlie	2014-12-25 18:30:15
re: computer solution	Dej Mar	2014-12-25 17:16:18
computer solution	Charlie	2014-12-25 14:01:32

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