Question

http://prntscr.com/9iqejc

Answer 1

any GP is in the form of
a,ar,ar^2, ar^3 .......
here
t1=a
t2= ar
t3= ar^2
t4= ar^3

Answer 2

observe each term
can u find tn

Answer 3

here common ratio (r) = t2/t1= t3/t2=t4/t3

Answer 4

2,4,8,16
compare and write a and r

Answer 5

the common ratio is 2

Answer 6

Right. Now that you have the common ratio, r, such that r=2, which of the four listed formulas would be the correct one for the given geometric sequence?

Answer 7

compare in number in t LHS , and power of r in RHS
u can easily write
n th term = tn =

Answer 8

a=2. r= 2
substitute these values in tn =a*r^n-1

Answer 9

Question 7
just replace n with 9
t9 =