Question

two dice are thrown together find the probability that the product of the number on the dice is either divisible by 5 or by 7​

Answer 1

Total outcome= 36

numbers divisible by 5 are (5,1)(5,2)(5,3)(5,4)(5,5)(5,6)

(1,5)(2,5)(3,5)(4,5)(6,5)= 11 numbers

numbers divisible by 7 are none as it requires 7 to be rolled on one of the dice, knowing that a dice has only 6 faces or counts upto 6.

So, P= 11/36