Question

if you choose a two digit number at random ,is it more likely that the
number will be divisble by 5 or by 7
ex.

Answer 1

there are 90 possible 2 digit numbers

of those 18 are divisible by 5 and 13 are divisible by 7, the first one is 14 and the last one is 98.

35 and 70 are divisible by both 5 and 7, so in total there are 29 divisible by either 5 or 7

so the probability is 29/90

Answer 2

OOOPS, misread your question
It is actually easier than my first interpretation

there are 18 divisible by 5 and only 13 divisible by 7, so it is more likey to be divisible by 5