Question

find the 12th term from the last term of A.P. -2 , -4 , -6..........-100 in english ​

Answer 1

Answer:

We have to find out the 12th term of an AP

from the end.

So,we have to assume that the last term is

our first term and the last term in this AP is -10

let the first term be-100 and d=2

a12= {a+(n-1)d}

={-100+(12-1)2}

=(-100+11×2)

=-100+22

=-78

so ,the 12th term of the AP from the end will

be-78