Find the sum of the first 22 terms of the AP: 8,3,-2
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Answered by
15
Answer:
Step-by-step explanation:
n=22
a=8
d=3-8=-5
Sn=n/2(2a+(n-1)d)
=22/2(16+21×(-5))
=11×(-89)
=-979
Answered by
2
Answer:
Step-by-step explanation:
S22=?
Sn=n/2(2a+(n-1)d)
Ap- 8,3,-2
A1=8
D=3-8=-5
N=22
S22=22/2(2(8)+(22-1)-5)
11(16+(21)-5)
11(16-105)
11(-89)
-979
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