Question

A die is thrown 100 times . If the probability of getting an even number is $\frac{2}{5}$ . How many times an odd number is obtaincd?

Answer 1

Total number of a die is thrown =100

Let an even number comes x times, then probability of an even number=$\frac{x}{100}$

$\therefore \frac{x}{100}=\frac{2}{5}\Rightarrow x=\frac{2\times 100}{5}=40$

and number of outcomes of an odd number=100-40=60