Answers

2014-03-15T16:34:01+05:30
7^n>10^5
taking common log on both side
nlog7>5log10
nlog7>5
but log343=3log7=2.5353  (given)
log7=2.5353/3
therfore (2.5353n)/3>5
n>15/2.5353=5.916
therefor n should be greater than 6
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2014-03-16T15:03:03+05:30
Yes you are right the given content above is right.
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