Set 1
2. If five spiders can catch five flies in five minutes, how many spiders are required to catch a hundred flies in a hundred minutes? Answer
3. Can you arrange 8 pieces on a draughtsboard so that there is only one on each row and only one in each column?
Answer
4. On the table in front of me is a magic rope about 1 metre in length. There are no knots in the rope. I pick up one end in my right hand and the other end in my left. Without letting go of either end, I stretch my arms apart and, lo and behold, a knot appears in the rope. How is it done? Answer
5. If the Earth were a perfect sphere with no hills and valleys but had a smooth surface, and a wire were stretched around the equator, the wire would be a bit over forty million metres long. If the wire were cut and exactly one metre added to its length, so that it now formed a ring around the Earth the same height above the ground all along its length, just how far would the wire be above the surface of the Earth? Answer
6. Farmer Brown used exactly one third of his stock of fence posts to construct a perfectly square enclosure. With another third, he build two adjoining square enclosures of equal size. Finally, he used the remaining posts to construct three identical adjoining squares. Remembering that the distance between fence posts has to be the same in every case, what is the minimum number of fence posts in Farmer Brown's stock? Answer
7. I pride myself on never working in the office for more than half of each day; and I never work at the weekends. Of course, I am totally addicted to golf and spend all my non-working hours perfecting my play (and each evening in the club bar). Yesterday evening, as the bar closed in the last light of England's lengthening evenings, I worked out that so far this month, I had been to the office on eleven days and had managed to get in ten afternoons and nine mornings of golf. What is today's date? Answer
Tricky Teasers - Freakish Facts
Set 1 ~ Set 2 ~ Set 3 ~ Set 4 ~ Set 5
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