## anonymous 5 years ago 20! / 16! = A. 24 B. about 16 C. 116,280 im in algebra :)

1. anonymous

c

2. anonymous

How'd u get that answeeeerrrrr? :)

3. amistre64

20.19.18.17

4. amistre64

its what a factorial means 20! means 20.19.18.17.16.16...3.2.1

5. anonymous

$\frac{20!}{16!}= 20\times 19 \times 18\times 17$ the 16! cancels

6. amistre64

the 16! cancels out the rest from 16 to 1 so we are left with just 20.19.18.17

7. anonymous

Ahhh i see... weird we didnt even learn this in my lesson >.<

8. anonymous

exactly what satellite is expalining

9. amistre64

its secret forbidden knowledge lol

10. anonymous

Well i am probably having a serious *blonde moment* but i have no idea how u got those numberssssss >.<

11. anonymous

ok so the term ! means you multiply all the numbers after that number 20*19*18*17*16 ---------------- 16 The sixteens cancle eachother out so you jsut have to multiply 20*19*18*17=116,280

12. anonymous

Ahh ya and then the 16 cancels out?!?! ohhh i see

13. anonymous

yep