Question

If the probability of winning a game is $0.3$, then what is the probability of losing it?

• A. $0.1$
• B. $0.3$
• C. $0.7$
• D. $1.3$

Answer 1

Answer: (C)

$0.7$

Let $A$ be an event of winning and $B$ be an event of losing the game.

Given $P\left(A\right)=0.3$

Total probability $=P\left(A\right)+P\left(B\right)$

$\Rightarrow$ $1=0.3+P\left(B\right)$

$\Rightarrow$ $P\left(B\right)=1-0.3=0.7$

$\therefore$ $P\left(B\right)=0.7$