Question

Two dice are rolled. Find the probability that sum of the numbers on the uppermost faces is

(a) an even number or a perfect square

(b) a perfect square or a number less than 5

(c) divisible by 2 or 3 ​

Answer 1

Step-by-step explanation:

Total no of outcomes=36

There are 18 even numbers and 3 non even perfect square numbers.

So p(getting an even no or a perfect square )=21/36.

There are 4 numbers less than 5 and 6 square numbers.

the 2nd answer is 10/36=5/18.

There are 18 numbers divisible by 2 and 6 numbers divisible by 3 which excludes the multiples of 2.

So the 3rd answer is 24/36=2/3.

Hope it is clear.