A quirky and ingenious puzzle book to test if you are a genius. In 1938, two authors embarked on a mission to find geniuses, using robust questions like: 'If a hen and a half lays an egg and a half in a day and a half, how many eggs will seven hens lay in six days?' 'By rearranging the letters in the word 'plea' make three new words.' 'Which is heavier, milk or cream?'