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Maths Puzzle
Some stones are placed on a straight road AB. The length of the road is 200 m and the stones are placed 4 m apart beginning at point A. A student was asked to bring these stones to the point B one at a time. He started picking up the stones from point A. If the minimum distance that he has to cover is 3760 m, then how many stones were placed on the road?
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self Other Question
Consider the following two series:
3, 7, 11, 15, .................. 120 terms
1, 6, 11, 16, ................... 80 terms
Then how many terms are common between the above two series of number?
Consider the following series: 13, 20, 27, 34, ....... 370, 377. How many pairs of two distinct numbers can be formed such that the sum of each pair is equal to 390?