Can you solve it? The family planning puzzle – video

Alex Bellos ponders how a fictional government planning to increase the proportion of girls to boys would implement a family planning policy - and what would happen if it did. Can you work out how this could be done mathematically ... and humanely? Test your brain power with imaginary Bart and Lisa Simpsons

" Click here for a text version of this puzzle

" And click here for the solution Continue reading...