Question

if there is a 10% chance that a bowler will get a strike, what is the chance that the bowler will not get a strike? the probability is % (type a whole number.)

Explanation:

Step1: Recall probability rule

The sum of the probability of an event happening and not - happening is 1 or 100%.
Let $P(S)$ be the probability of getting a strike and $P(\text{not }S)$ be the probability of not getting a strike. Then $P(S)+P(\text{not }S)=100\%$.

Step2: Substitute given value

We know that $P(S) = 10\%$. So, $P(\text{not }S)=100\% - P(S)$.
$P(\text{not }S)=100 - 10$.

Answer:

90