FIND

Asked by  | 23rd Sep, 2008, 10:23: PM

Expert Answer:

let Sn denote the sum of n terms

S1 = a1 = 8 = a =first term

S2 = a1+a2 = 22 ==> a2 = 14

d = a2 -a1 = 6

so 164 = a+(m-1)d

164 = 8 +(m-1)6

m = 27

Answered by  | 24th Sep, 2008, 12:33: AM

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