Advertisement Remove all ads

# A box contains 20 cards numbered from 1 to 20. A card is drawn at random from the box. Find the probability that the number on the drawn card is a prime number - Mathematics

Sum

A box contains 20 cards numbered from 1 to 20. A card is drawn at random from the box. Find the probability that the number on the drawn card is a prime number

Advertisement Remove all ads

#### Solution

Total number of outcomes = 20

The prime numbers from 1 to 20 are 2, 3, 5, 7, 11, 13, 17 and 19.
So, the favourable number of outcomes are 8.
∴ P(number on the drawn card is a prime number) = $\frac{\text{ Favourable number of outcomes }}{\text{ Total number of outcomes }} = \frac{8}{20} = \frac{2}{5}$

Is there an error in this question or solution?
Advertisement Remove all ads

#### APPEARS IN

RD Sharma Class 10 Maths
Chapter 16 Probability
Exercise 16.1 | Q 49.2 | Page 24
Advertisement Remove all ads
Advertisement Remove all ads
Share
Notifications

View all notifications

Forgot password?