Question

two dice are rolled simultaneously.Find the probability of getting ,a the sum as 7 , b sum as 3or 4 , c the prime numbers on both the dice​

Answer 1

Step-by-step explanation:

b

sum 3=2

sum4=3

probability(3)=2/36

=1/18

probability(4)=3/36

=1/12

Answer 2

Probability of getting, a) the sum as 7 , b) sum as 3 or 4 , c) the prime numbers on both the dice is :

Two dice rolled simultaneously.

The total number of chances of getting outcome = 36

a) sum as 7

Different chances are 1,6; 2,5; 3,4

Number of chances = 6

Probability of sum 7 = 6/36 = 1/6

b) sum as 3 or 4

Different chances are 1,2; 2,2

Number of chances = 3

Probability of sum as 3 or 4 = 3/36 = 1/12

c) prime number on both dice

Prime numbers =2,3,5

Number of chances = 9

Probability of prime number on both sides = 9/36 =1/4