Question

Tom has a 0.5 chance of winning the Booker Prize, whereas John has a 0.4 chance of winning the Booker Prize. Only one Booker prize is up for grabs. How likely is it that at least one of them will win the prize?

Answer 1

Pr of Tom winning = 0.5

Pr of John winning = 0.4

Prob of either winning = Pr of Tom winning + Pr of John winning

= 0.4 + 0.5

= 0.9