CBSE Class 10 Answered
AP
Asked by monikas | 07 Oct, 2008, 02:33: PM
Expert Answer
Sn = 5 n 2 - 3n
a1 = S1 = 5(1) - 3 (1) = 2
S2 = 5(4) - 3(2)= 14 = a1 + a2
a2 = (a1 + a2) - a1 = 14 - 2 = 12
d = 12 - 2 = 10
a10 = a1 + 9 d = 2 + 9(10) = 92
Answered by | 07 Oct, 2008, 06:05: PM
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