Question

A box contains $20$ cards marked with the numbers $1$ to $20$. One card is drawn from this box at random. What is the probability that number on the card is a multiple of $5$?

• A. $\frac{1}{5}$
• B. $\frac{2}{5}$
• C. $\frac{3}{5}$
• D. $\frac{4}{5}$

Answer 1

Answer: (A)

$\frac{1}{5}$

Sample space $=20$
multiples of 5 are$(5,10,15,20)$
probability of perfect square $=\frac{4}{20}$$=\frac{1}{5}$