Question

From $100$ cards numbered $1$ to $100$, two cardsare drawn one by one with replacement. The probability that both are divisible by $5$ is

• A. $\frac{1}{5}$
• B. $\frac{1}{10}$
• C. $\frac{1}{25}$
• D. $\frac{1}{15}$

Answer 1

The correct option is C $\frac{1}{25}$

There are 20 multiples of 5 between 1 to 100.
Thus, probability $=\left(20/100\right)\ast \left(20/100\right)=1/25$