Problema Solution
Two hundred thousand people enter a multistage lottery. The odds of winning in the first round are 1 in 50. For those winning the first round, the odds of winning the second round are 2 in 100. How many people can be expected to win in the second round?
Answer provided by our tutors
since the odds of winning in the first round are 1 in 50
(1/50)*200,000 = 4,000 will win the first round
the odds of winning the second round are 2 in 100 thus
(2/100)*4000 = 80 people are expected to win the second round.