Question

Two dice are thrown simultaneously. Find the probability of : 1. getting a sum divisible by 5.

Answer 1

Answer:

1/6

Step-by-step explanation:

Answer 2

Here are all the possible outcomes when a pair of dice is thrown :

(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)

(2,1)(2,2)(2,3)(2,4)(2,5)(2,6)

(3,1)(3,2)(3,3)(3,4)(3,5)(3,6)

(4,1)(4,2)(4,3)(4,4)(4,5)(4,6)

(5,1)(5,2)(5,3)(5,4)(5,5)(5,6)

(6,1)(6,2)(6,3)(6,4)(6,5)(6,6)

So ,total number of outcomes = 36

Now , number of favourable outcomes (sum divisible by 5) = (1,4)(2,3)(3,2)(4,6)(5,5)(6,4)

= 6

Probability of getting a sum divisible by 5 = Number of favourable outcomes/ total number of outcomes

= 6/36

= 1/6