Fourth and
Seventh term of GP are 1/18 and -1/486 respectively. Find the G.P.
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Step-by-step explanation:
a*r^3=1/18 ......eq1
a*r^6=-1/486.....eq2
eq2/eq1
- a*r^6/a*r^3=-1/486/1/18
- r^3=-1/27
- r=-1/3
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