Question

A whole number is choosen between 1 to 20

A) What is the probability of getting multiples of 5?

B) What is the probability of getting an prime number?

Answer 1

a) 4 ....................
..

Answer 2

A) Here, total no of outcomes = 20
No. of possible outcomes = 4
The probability of getting multiples of 5
= no. of possible outcomes/ total no. of outcomes
= 4/20
= 1/5
Ans.- 1/5.

B) Total no. of outcomes= 20
No. of possible outcomes= 8
The probability of getting a prime number
= no. of possible outcomes/total no. of outcomes
= 8/20
= 2/5
Ans.- 2/5.