Question

Soni has digit cards $1,4$ and $7$ She makes $2$ digit numbers using each card only once. The probability that a $2$ digit number chosen at random is divisible by $2$ is

• A. $\frac{1}{3}$
• B. $\frac{2}{3}$
• C. $\frac{1}{6}$
• D. $\frac{5}{6}$

Answer 1

The correct option is A $\frac{1}{3}$

The number will be divisible only when the unit's digit is $4$ .
So, the probability of choosing $4$ as the unit's digit is $\frac{1}{3}$ as total number of digits are $3$.