Question

Two dice are thrown at the same time. Find the probability that the sum of the two numbers appearing on the top of the dice is:  less than or equal to 12

Answer 1

Total outcomes = 36 i.e.

(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)

Favourable outcomes = 36 

P(E) = `36/36 = 1`