Question

12th term of a.p.-5,-1,3,7,...is

Answer 1

Answer:

Step-by-step explanation:

Given,

a=-5

d=-1-(-5)=-1+5=4

n=12

A12=a+(n-1)d

=-5+(12-1)×4

= -5+11×4

=-5+44.

=39.

Hence, 12th term of this A.P be 39.

Answer 2

a = -5,d = -1-(-5) =4 and n = 12.

We have, an = a + (n-1) d

So, a10 = -5 + (12-1)(4)

a10 = -5 + 11 (4)

a10 = -5 + 44

a10 = 39

Therefore,the 12th term of the given AP is 39.

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