180 Days of Ideas for Discussion in Math Class. (as of 9July2014, we're in overtime!)

Mr Smith has two children. One of them is a boy. What is the probability the other child is also a boy? — solve my maths (@solvemymaths) April 4, 2015

52% - but this isn't really a maths problem.

Drumroll ........ Nope.

0. The problem says "One of them"Seriously though, is it 1/3? Could be BB, BG, GG, GB. 3 of them have at least one boy. Given one of them is a boy, the only choice where the situation holds true is BB.

Yup. Counter-intuitive, like Monty Hall Problem.

52% - but this isn't really a maths problem.

ReplyDeleteDrumroll ........ Nope.

ReplyDelete0. The problem says "One of them"

ReplyDeleteSeriously though, is it 1/3? Could be BB, BG, GG, GB. 3 of them have at least one boy. Given one of them is a boy, the only choice where the situation holds true is BB.

Yup. Counter-intuitive, like Monty Hall Problem.

ReplyDelete