find G.P 1,4,16,64
find the 9th term of GP 1, 4, 16, 64
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Hi ,
let a and r are first term and common
ratio of G. P
then the G.P is
a , ar , ar² ,....
n th term of G.P = an = ar^n-1
Here,
1 , 4 , 16 , 64 are in G. P
a = 1 ,
r = a2 / a1
r = 4/1 = 4
n = 9
a9 = 1 × 4^( 9 - 1 )
= 4^8
Therefore ,
9th term in G .P = 4^8
I hope this helps you.
:)
let a and r are first term and common
ratio of G. P
then the G.P is
a , ar , ar² ,....
n th term of G.P = an = ar^n-1
Here,
1 , 4 , 16 , 64 are in G. P
a = 1 ,
r = a2 / a1
r = 4/1 = 4
n = 9
a9 = 1 × 4^( 9 - 1 )
= 4^8
Therefore ,
9th term in G .P = 4^8
I hope this helps you.
:)
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