Question

A card is drawn from the cards numbered 11 to 40, find the probability that the drawn card is a multiple of 5 or 10.

1. 1/5
2. 2/5
3. 3/5
4. 4/5
5. 6/5

Answer 1

Correct Answer - Option 1 : 1/5

Given

Total cards = 30

Formula used

P(E) = Number of favourable outcomes/Total number of outcomes

Calculation

Let E is an event of drawing a card multiple of 5 or 10

Number of favourable cards = 6 i.e(15,20,25,30,35 and 40)

P(E) = 6/30

⇒ 1/5