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In following number series, two terms have been put within brackets. Choose the appropriate option

How many terms are there in the series 201, 208, 215, ..., 369 ?

Option:
A. 23
B. 24
C. 25
D. 26
Answer: C . 25

Justification:

(Use Arithmetic Progression)

The given series is an A.P. in which a = 201 and d = 7.
Let the number of terms be n.
Then, 369 = 201 + (n - 1) x 7 or  n = 25.
Hence, the answer is (c).

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