Question

Two dice are thrown, what is the probability that either a doublets or a total sum of 7 is obtained?
A) 5/6
B) 1/6
C) 2/3
D) 1/3
E) None of these

Answer 1

Answer -1/3 Because doublets are (1,1); (2,2); (3,3) ; (4,4);(5,5);(6,6)

And total summ of 7 - (1,6);(6,1);(2,5);(5,2);(3,4);(4,3)

so 6+6 outcomes=12 outcomes

so 12/36=1/3