Question

Find the sum of first 22 term of ap 8 3 -2

Answer 1

Step-by-step explanation:

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Answer 2

a = 8
d = 3-8 = -5
Sn = n/2 [2a + (n-1)d ]
S22 = 11 [ 16 + 11* (-5) ]
S22 = 11 * -39= - 429