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The first term of an AP is 5, the last t...

The first term of an AP is 5, the last term is 45 and the sum is 400. Find the number of terms and the common difference.

A

n = 16, d = 8/3

B

n = 17, d = 8/3

C

n = 16, d = 9/2

D

n = 18, d = 8/4

Text Solution

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The correct Answer is:
A
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