Quote:
Originally Posted by cyberxxx
Still no one is able to prove the answer with formula?  |
We wrote the answer, already. :-P
It's just a matter of expanding the right of the equality and then rewriting it in factorial form.
2^15*3^6*5^3*7^2*11*13=
2x2x2x2x2x2x2x2x2x2x2x2x2x2x2x3x3x3x3x3x3x5x5x5x7x 7x11x13=
2x3x(2x2)x5x(2x3)x7x(2x2x2)x(3x3)x(2x5)x11x(2x2x3) x13x(2x7)x(3x5)x(2x2x2x2)=
2x3x4x5x6x7x8x9x10x11x12x13x14x15x16=
16 factorial=
16x15x14x13x12x11x10x9x8x7x6x5x4x3x2x1=
1x2x3x4x5x6x7x8x9x10x11x12x13x14x15x16
n=16
Q.E.D.
Still... good to see a father taking such an interest in his son's math homework. If more did so, I think we'd be further along a better path.