Raymond B. answered 06/11/22
Math, microeconomics or criminal justice
Probability of at least one hit = 1 - Pr(0 hits)
Pr(0 hits) = (1-.242)^18 = .758^18 = about 6.824 x 10^-3 = 0.006824
1 - 0.006824 = 0.993176 = 99.32% probability of at least one hit