Question

Evaluate.





1

56

112

Answer 1

whats with the "!"?

Answer 2

im not sure

Answer 3

That's the factorial sign. 5! = 5*4*3*2*1, and likewise for other numbers. So, rewrite the factorials like that:

\[\frac{8!}{5!3!} = \frac{8*7*6*5*4*3*2*1}{5*4*3*2*1*3*2*1} = \frac{8*7*6}{3*2*1} = 56\]

Answer 4

thanks