Question

For an A. P the first two terms are -3 and 4 the 21 term is.....

plz answer me​

Answer 1

The 21st term of an AP is 137.

Solutions:-

The first two terms of AP are

-3 , 4

a = -3

d = 4+3

d = 7

A21 = a + 20d

= -3 + 20 × 7

= -3 + 140

= 137.

Done by Aritra kar.

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