Question

If two dice are thrown at the same time, find the probability of getting sum of the dots on top is prime.​

Answer 1

Answer:

Total possible outcomes = 36

event of getting prime no. is (1,2),(2,1),(3,2),(2,3),(5,2),(2,5),(1,1)

P ( getting prime no.)= 7 /36

Answer 2

Answer:

Step-by-step explanation:

The numbers on dies: 1,2,3,4,5 and 6

In these 6 numbers, the 3 prime numbers are: 2,3 and 5

Sum of all the numbers 1+2+3+4+5+6=21

Prime numbers between 1 and 21= 2,3,5,7,11,13,17,19= 8 numbers.

So probability= 8/12 = 4/3