Question

which term of the AP:12,10,8,........,-48 ?​

Answer 1

first term=a=12.

common difference=d=10-12=-2

l=-48

a+(n-1)d=-48

12+(n-1)-2=-48

12-2n+2=-48

14-2n=-48

-2n=-48-14

-2n=-62

2n=62

n=62/2

n=31

:31st term of given Ap is -48.