Question

The probability of winning a game is $\frac{2}{5}$, the probability of losing is ___

• A. 1
• B. 0.4
• C. 0.6
• D. 0.5

Answer 1

The correct option is C 0.6

Winning or losing a game are complementary events.
We know that, for complementary events, P(A) + P(notA) = 1.
Thus, if $\text{P(winning)}=\frac{2}{5}$
Then, $\text{P(losing)}=1-\frac{2}{5}$
$\Rightarrow \text{P(losing)}=\frac{3}{5}=0.6$