Tuesday 30th January 2024
Difficulty: Medium
Puzzles I (Quiz #438)
Photo by Ave Calvar (Unsplash)
Puzzles taken from The Junior Weekend Book by J.R.Evans, published in 1938.
1. If five people, on parting, all shake hands with each other once, how many handshakes will there be altogether?
2. 2 cyclists, 20 miles apart, start at the same instant and ride towards each other on a straight road at 10 mph. At the same time, a fly on the forehead of one of the riders starts to fly towards the other rider at 15 mph, lands on his forehead, then sets off back towards the first rider, and so on until it is squashed between the foreheads of the two riders as they bump together. How far has the fly flown altogether?
3. Trains from New York to San Francisco take six days for the journey. One train starts from each city at the same time each day. How many trains does each one meet along the way?
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