Question

A number is selected at random from 1 to 30 find tbe probability of getting a prime no.

Answer 1

here is your answer

here, total no of outcomes =30

therefore ,no.of favourable outcomes=10{2,3,5,7,11,13,17,19,23,29}

therefore , prob =total no of favourable outcomes /total no of out comes

=10/30 =1/3

answer=1/3

Answer 2

     

Total no. of numbers from 1 to 30 = Total no. of outcomes = 30.

Prime numbers between 1 and 30 = 2, 3, 5, 7, 11, 13, 17, 19, 23, 29.

No. of favourable outcomes = 10.

Probability = 10/30 = 1/3.

Thank you...