Q. Probability of all 3 digit numbers having all the digits same is
A) $\frac{1}{100}$
B) $\frac{3}{100}$
C) $\frac{7}{100}$
D) None of these
Explanation
(a)
There are 9 favourable cases in which all three digits are same.
$\therefore Required\ probability = \frac{9}{900} = \frac{1}{100}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.