Question

Out of all the two digit numbers, what is the probability of the number not being a perfect square?

• A. $\frac{12}{15}$
• B. $\frac{1}{15}$
• C. $\frac{14}{15}$
• D. $\frac{14}{18}$

Answer 1

The correct option is C

$\frac{14}{15}$

Total number of two digit number = 90
Total number of two-digit perfect squares = 6
Number of two-digit numbers which are not perfect squares = $90-6$ = 84
Probability =$\frac{84}{90}$$=\frac{14}{15}$