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In an A.P., the first terms is 1 and the...

In an A.P., the first terms is 1 and the the common difference is 4. How many terms of the A.P. must be taken for their sum to be equal to 120?

A

`6`

B

`7`

C

`8`

D

`11`

Text Solution

Verified by Experts

The correct Answer is:
C
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