If the 3rd and 7th terms of a G.P are 9 and 1/9 respectiv...
If the 3rd and 7th terms of a G.P are 9 and 1/9 respectively. Find the common ratio.
13
19
23
29
Correct answer is A
Tn=arn−1 (terms of a G.P)
T3=ar2=9 ... (i)
T7=ar6=19 ... (ii)
Divide (i) by (ii);
ar6ar2=199
r4=181
r4=(13)4
r=13
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