Question

Insert two numbers between 9 and 243, so that the resulting sequence is in GP.
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Answer 1

Answer:

27, 81

Step-by-step explanation:

let two numbers between 9 and 243are X, Y

then the gp is

9, X, Y, 243

first term = a = 9

4th term = ar^3= 243

= > 9r^3= 243

=>r^3= 243/9= 27= 3^3

=> r= 3

X = ar= 9×3=27

Y = ar^2= 9×3×3=81

required two numbers are 27 , 81