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Question

In a row of trees, one tree is sixth from either end of the row. How many trees are there in the row?

1)12

2)9

3)6

4)11

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Solution

Let the number of trees in a row = nNow, it is given that one of the tree is in the sixth position from the either end of the rows.So, there is one tree that is in the middle, hence we can say that total number of trees in the row will be odd.n+12 = 6n + 1 = 12n = 12 - 1n = 11So, total number of trees in the row = 11

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