The second term of a G.P. is 6 and its 5th term is 81/4 . Find First Term
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Answer:
First term (a )= 4
because ,
T2 = 6
a r = 6_____(1)
T5 = 81/4
a r^4 = 81/4_____(2)
divide equation to 2 by 1
r^3 = 27/8
r= 3/2
put in (1)
a = 4
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