SOLUTION: Telephone poles are stored in a pile with 100 poles in the first layer, 98 in the second, 96 in the 3rd, and son on. How many poles are in the 40th layer?

SOLUTION: Telephone poles are stored in a pile with 100 poles in the first layer, 98 in the second, 96 in the 3rd, and son on. How many poles are in the 40th layer?

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Question 864523: Telephone poles are stored in a pile with 100 poles in the first layer, 98 in the second, 96 in the 3rd, and son on. How many poles are in the 40th layer?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
a40 = 100 + (39)-2
a40=22
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