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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Tim came second in Math. When his mother asked him how much he had scored, he answered that he got the sum of the first 9 even numbers. His mother immediately worked out the answer. How much had he scored in Math?
90
Explanation: Sum = (n x n) + n
Hence, 9 x 9 = 81 + 9 = 90
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I have four sides. Anyone can calculate my area if they come to know the length of any one side of mine. I have four right angles within me. Which shape am I?
There was a green house. Inside the green house there was a white house. Inside the white house there was a red house. Inside the red house there were lots of babies. What is it?
Fill in the blanks with a word which makes two different words if you read from both sides:
Tim's father has kept his ______ in the ______ for scoring good marks in math.
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