Question

v us VOMIDIULI some examples.
le 11 : Find the sum of the first 22 terms of the AP : 8, 3, -2, ...​

Answer 1

Step-by-step explanation:

a=8

d=-5

Sn =n/2[2a+(n-1)d] S22=22/2[2×8+(22-1)-5]

=11[16+21×-5]

=11[16-105]

=11(-89)

=-979