Question

if a third term of a GP is the square of the first term and its fifth term is 729,find the GP

Answer 1

Answer:

Step-by-step explanation:

ar²=a² - (1)

ar⁴=729 -(2)

From 1st equation; a=r²- (3)

Putting (3) in (2),

r⁶=729

So, r=3

And a=9

So, GP is 9,27,81,243 ......

Answer 2

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