Q. The probability that the two digit number formed by digit 1, 2, 3, 4, 5, is divisible by 4 (while repetition of digit is allowed), is
A) $\frac{1}{30}$
B) $\frac{1}{20}$
C) $\frac{1}{40}$
D) None of these
Explanation
(d)
Total number of numbers $= (5)^{2}$
Number of numbers which are divisible by 4 = 5
$\therefore$ Required probability $= \frac{5}{25} = \frac{1}{5}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.