gavinksong 11 Posted October 17, 2014 Report Share Posted October 17, 2014 This is a variant of BMAD's recent post on the probability of choosing a natural number with a 1 in the digits. From the set of all natural numbers... 1) What is the probability of choosing a natural number whose digits sum to an even number? 2) What is the probability of choosing a natural number whose digits sum to a number divisible by N? Quote Link to post Share on other sites

0 Solution DeGe 9 Posted October 17, 2014 Solution Report Share Posted October 17, 2014 0.5 the digit sum will be either odd or even with equal probability 1/N All numbers have equal probability Quote Link to post Share on other sites

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## gavinksong 11

This is a variant of BMAD's recent post on the probability of choosing a natural number with a 1 in the digits.

From the set of all natural numbers...

1) What is the probability of choosing a natural number whose digits sum to an even number?

2) What is the probability of choosing a natural number whose digits sum to a number divisible by N?

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