Question

4C4-4C1 = 0, ok?

Answer 1

My calc says -3.

Answer 2

?

Answer 3

?

Answer 4

4Combinator4 - 4Combinator1= ?

Answer 5

Yes, my calc says -3.

Answer 6

1-4, ok?

Answer 7

It should be 0, lol

Answer 8

\[_4 C _4 = _4 C_1\]

Answer 9

nCp = n! / p! (n-p)! ok?

Answer 10

thanks Saifoo.

Answer 11

What!? 4C4 is 1!?

Answer 12

I feel so dumb.

Answer 13

saifoo, i not use calculator, but paper and formulas :D

Answer 14

lol, i forgot how to do these though.
But my calc said -3. lol.

Answer 15

nCp = n! / p! (n-p)!
4C4=4! / 4! (4-4)! = 1
4C1=4! / 1! (4-3)!=4

Answer 16

You can also use:
\[\large \frac{n!}{r!(n-r)!} \]