Question

A bag contains 25 cards, numbered through 1 to 25. A card is drawn at random. What is the probability that the number on the card drawn is multiple of 5?

Answer 1

Here n(S) = 25

E₁ = Number on the card is a multiple of 5

= {5, 10, 15, 20, 25}

`\implies` n(E₁) = 5

Hence P(E₁) = `(n(E_1))/(n(S))`

= `5/25`

= `1/5`