Question

In a geometric series, the second term is 3 and the fifth term is 81. Find the third term.
(please explain clearly and easy to understand if you did that i'll give you a medal)

Answer 1

no more circles, lol

Answer 2

moon, go to school, lol

Answer 3

hi dipan

Answer 4

ill go back, one sec

Answer 5

ar=3
ar^4=81
r=3
a=1
third term ar^2=9

Answer 6

ar = 3, how do you know r = 3

Answer 7

lol you are here again

Answer 8

i dont think this is right

Answer 9

ar^4/(ar)=27
r^3=27
r=3...

Answer 10

do it step by step.....

Answer 11

the answer is 9

Answer 12

oh youre right

Answer 13

nice :)

Answer 14

moongazer... i have given the ans....

Answer 15

give him medal :)

Answer 16

i am really confused with geometric and arithmetic series questions do you have tips to be good at it??

Answer 17

geometric series is given by ar^n. where a is the first term and r is the common ratio. In AP the series is like a+nd. where d is the common difference.

Answer 18

in geometric when we divide consecutive terms, it is constant
hence the term ratio

Answer 19

in arithmetic when we subtract terms we get a constant difference

Answer 20

i already know that geometric series common ratio and arithmetic is common difference i am just confused