The first ,second and last terms of an A...

The first ,second and last terms of an A.P. are repectively 4,7 and 31 . How many terms are there in the given A.P.?

A

10

B

12

C

8

D

13

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MTG IIT JEE FOUNDATION-ARITHMETIC PROGRESSIONS -EXERCISE (MULTIPLE CHOICE QUESTION )(LEVEL 1 )

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