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 a perfect square?

Answer 1

Here n(S) = 25

E₂ = Number on the card is a perfect square

= {1, 4, 9, 16, 25}

`\implies` n(E₂) = 5

∴ P(E₂) = `("n"("E"_2))/("n"("S"))`

= `5/25`

= `1/5`