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Find the sum of the first 22 terms of the AP : 8, 3, -2, . . . |
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Answer» ong>Answer: -979 Step-by-step explanation: n=22, a=8, d= -5 Sn= 22/2 (2 (8)+(22-1)(-5)) Sn=11 (16+21 (-5)) Sn=11 (16-105) Sn= 11 (-89) Sn= -979 |
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