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Logarithm

Posted June 12th, 2009 by alpha
in

Find the least number n such that $ 7^n>10^5 $ , given that $ log_ {10} 343=2.5353 $

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Asked number is

On June 13th, 2009 Structure says:
$$7^6=343^2=117649>100000$$
$$7^5=16807$$

Asked number is 6.

~~THANK YOU ~~

On June 13th, 2009 alpha says:

````Maths````
000
(((())))
///

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