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प्रश्न
Answer the following:
For a G.P. if t2 = 7, t4 = 1575 find a
उत्तर
Given, t2 = 7, t4 = 1575
tn = arn–1
∴ t2 = ar
∴ ar = 7
∴ r =
Also, t4 = ar3
∴ ar3 = 1575
∴
∴ a2 =
∴ a2 =
∴ a =
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