## MissyK Simplify 3!/4! Why are there !'s? The answer is .75 right? one year ago one year ago

1. ParthKohli

Nah,$3!=3\times2\times1$$4!=4 \times3\times2\times 1$

2. ParthKohli

$n! = n\times(n -1)\times(n-2)\cdots \times 1$

3. ajprincess

Nope. If u ! after a number u call it as factorial. 3!=3*2*1 similarly 4!=4*3*2*1

4. zpupster

4! = 4x3x2 3!=3x2 24/6=4

5. ParthKohli

Hmm

6. MissyK

I still don't understand it. :c

7. ParthKohli

Do you know that$3!= 3\times2 \times 1\\ 4! = 4\times3 \times 2\times 1$And so$\dfrac{\color{#C00}{3!}}{4!} = \dfrac{\color{#C00}{3\times2\times1}}{4\times3 \times 2\times1}$

8. MissyK

6/24 ?

9. MissyK

how do I simplify it more? ;w;

10. hba

Use a calculator. But it is pretty clear it is 1/4 or 0.25

11. ryan.g.campbell.17

The exclamation mark means factorial. In this case 3! Is (3 x 2 x 1) If It was let's say, 6! It would be (6 x 5 x 4 x 3 x 2 x 1) So in your question 3!/4 is 3x2x1 divided by 4 which is 6 divided by 4, which is 0.75 :) glad I could help.

12. hba

Its 3!/4! not 3!/4.

13. MissyK

I still don't understand it. But thanks anyway.

14. ryan.g.campbell.17

Oh, then it's (3 x 2 x 1) / (4 x 3 x 2 x 1) Which is 6 / 24, meaning the answer is 0.25? :)

15. hba

Yes. Btw,What happened to your other account?

16. ryan.g.campbell.17

Me? I've never had another account ;o I just joined today :)

17. hba

Interesting.