Re: Re[2]: Math problem

[Pham Thi Thanh Hong <smm68490@ait.ac.th>]

Hi Joseph Nguyen,

On Wed, 19 Mar 1997, Joseph Nguyen wrote:

> Hi Hong,
> 
> You overcounted the number of numbers that divisible of 7 in the group of 
> numbers divisible of 49.
> 
> there are at least 100 7's in 700!
> >From 1 to 700 there are 1 7^2 (49) and 1 7^3 (343).  So, we heve 103 7's in 
> 700! we need only 100 7's.  
> 100 - 3 = 97. and so, the least number should be 7*97 = 679
> 

How do you think about 98 (=2*49), 147 (3*49), 196 (=4*49), and so on? 

Cheers,

Hong.