Question

The numbers
1 , 2 , … , 17 are divided into 5 disjoint sets. One set has 5 elements, one set has 4 elements, two sets have 3 elements and the last set contains the 2 remaining elements. Two players each choose a number from 1 to 17 at random. The probability they choose numbers from the same set can be expressed as a b , where a and b are coprime positive integers. What is the value of a + b ?

Answer 1

this question was already asked r u at brilliant.org

Answer 2

http://openstudy.com/users/jonask#/updates/510f8d8be4b09cf125bd1db9

Answer 3

no

Answer 4

so vat should be answer

Answer 5

check the link

Answer 6

work out (5/17)^2 + (4/17)^2 + (3/17)^2 + (3/17)^2 + (2/17)^2 first

Answer 7

k

Answer 8

I KNOW the answer.

Answer 9

(5/17)^2 + (4/17)^2 + (3/17)^2 + (3/17)^2 + (2/17)^2
vat after this