Did you solve it? Lewis Carroll for insomniacs

Earlier today I set these puzzles by Lewis Carroll, who as well as writing books like Alice’s Adventures in Wonderland, was also a prolific puzzle setter.

1. The Chelsea Pensioners

If 70 per cent have lost an eye, 75 per cent an ear, 80 per cent an arm, 85 per cent a leg: what percentage, at least, must have lost all four.

Solution 10

This was how Carroll solved it: “Adding the wounds together we get 70 + 75 + 80 + 85 = 310, among 100 men;…