Question

Two boys are asked to select each one number from $1$ to $100$, the probability that they select the same number is

• A. $\frac{99}{100}$
• B. $\frac{1}{100}$
• C. $\frac{{}^{100}{C}_2}{{100}^2}$
• D. $\frac{100\times 99}{{}^{100}{C}_2}$

Answer 1

The correct option is B $\frac{1}{100}$

Let first man select x and it's probability is definite can be any number no chance for particular number

So second man chooses same value x is 1/100