Question

An American roulette wheel has 38 slots: two slots are numbered 0 and 00, and the remaining slots are numbered from 1 to 36. Find the probability that the ball lands in an even-numbered slot, not including 0 or 00.

Answer 1

Let:

A = The ball lands in an even-numbered slot

a = Total even numbers

N = Total of numbers

so, the probability that the ball lands in an even-numbered slot is given by:

$\begin{gathered} P(A)=\frac{a}{N} \\ P(A)=\frac{18}{38} \\ P(A)=\frac{9}{19} \end{gathered}$