if third term of GP is 1 and seventh term is 625 then common ratio is?
girish , 6 Years ago
Grade 11
Magical Mathematics[Interesting Approach]> if third term of GP is 1 and seventh term...
1 Answers987456321
Last Activity: 6 Years ago
the general formula for term t in a GP is
Tn=arn-1
where a is the first term
now T7/T3=r6/r2
which implies
625=r4
r=5
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