Question

Obtain the value of n for which sn= -144

Answer 1

Step-by-step explanation:

Answer for this question is -22

Answer 2

Answer:

Sn = -144

Which implies n/2(a+l) = -144.

Which implies n/2 = -144/a+l

Which implies n = 2(-144)/a+l

The value of n = 2(-144)

a+l