Sunday, 13 October 2013

100000000

How many natural number less than 100000000 are there, whose sum of digits equals to 7? 
at
Labels: ,

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

Define f:R→R by \[f(x)= \begin{cases}(1-\cos x) \sin \left(\frac{1}{x}\right), & x \neq 0 \ 0, ...