One day on reaching school I found there were a total of 16 bicycles and tricycles parked in the school compound. I counted the total number of wheels to be 38. Find out the number of bicycles.
10 bicycles.
Explanation:: All the cycles will have at least 2 wheels, so 16 cycles will have 16x2=32 wheels. But in total there are 38 wheels. So the extra wheels (38-32=6) must be of the tricycles because bicycles have 2 wheels and tricycles have 3 wheels.
Therefore, the number of tricycles parked is 6 and hence the number of bicycles is 10.
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If it took fifteen men ten days to build a tower, how long would it take four men to build it?
25. Explanation:
Replace each number with the corresponding letters in the alphabet.
6 = F
15 = O
18 = R
20 = T
25 = Y
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I am a seven letter word. I am very heavy. Take away two letters from me and you will get 8. Take away one letter from me and you will get 80. Who am I?
Here come the best enigmas that appeared in the Batman movies - usually Riddler asking Bruce Wayne.
If you look at the number on my face you won't find thirteen anyplace.
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