Question

Cards bearing numbers 3 to 20 are placed in a bag and mixed thoroughly. A card is taken out of the bag at random. What is the probability that the number on the card taken out is an even number?

Options

• `9/17`

• `1/2`

• `5/9`

• `7/18`

Answer 1

`bb(1/2)`

Explanation:

Total number of card = 18

n(S) = 18

A = Even numbers from 3 to 20

(A) = 4, 6, 8, 10, 12, 14, 16, 18, 20

n(A) = 9

Required probability P(A) = `(n(A))/(n(S)) = 9/18`

P(A) = `1/2`