Mathematics WAEC / WASSCE 2019 Permutations, Combinations & Probability
There are 8 boys and 4 girls in a lift. What is the probability that the first person who steps out of the lift will be a boy?
A
\(\frac{1}{6}\)
B
\(\frac{1}{4}\)
C
\(\frac{2}{3}\)
D
\(\frac{1}{2}\)