Question

There are 25 stamps numbered from 1 to 25 in a box. If a stamp is drawn at random from the box. The probability that the number on the stamp drawn is a multiple of 3

• A. $\frac{9}{25}$
• B. $\frac{8}{25}$
• C. $\frac{7}{25}$
• D. $\frac{6}{25}$

Answer 1

The correct option is B $\frac{8}{25}$

There are 8 multiples of 3 from 1 to 25.
Therefore, probability $=\frac{{}^8{C}_1}{{}^{25}{C}_1}=\frac{8}{25}$