Question

Find the 21 St term of an AP 10, 8, 6 ...............

Answer 1

Explanation:

given,

first term (a) =10

common difference (d) = 8-10 =-2

we know that,

General term = a+(n-1)d.

= 10+(21-1)(-2) given, (n=21)

= 10+(20)-2

= 10-40

= -30

hence, 21 St term is -30.

I hope it is helpful for you!

Answer 2

-30. HOPE IT HELPS U