A pile of logs has 30 on the first layer, 29 on the second, 28 on the
third and so on. How many logs are there in the first 6 layers?
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A pile of logs has 30 on the first layer, 29 on the second, 28 on the
third and so on. How many logs are there in the first 6 layers?
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30 first layer
29 second layer
28 third layer
27 Fourth layer
26 Fifth layer
25 Sixth layer
So the answer is 25 layer