Question

Answers:


1

2! / 4!

70

700

Answer 1

http://prntscr.com/5p43gq

Answer 2

use the property that
\(\Large n! = n(n-1)!\)

Answer 3

so,
\(\Large 8! = 8\times 7!\)

Answer 4

\(\Large 7! = 7\times 6! \\ \implies \Large 8! = 8\times 7\times 6!\)

Answer 5

continuing this way, we get,
\(\Large 8! = 8\times 7\times 6\times 5\times 4!\)

Answer 6

this 4! in the numerator gets cancelled with one of the 4!s in the denominator

Answer 7

\(=\large \dfrac{8\times 7\times 6\times 5}{4!}\)

Answer 8

now you must already be knowing
\(\large 4! = 4\times 3 \times 2\times 1\)

plug that in and simplify :)

Answer 9

is the answer 70?

Answer 10

did you calculate it ?

Answer 11

yes

Answer 12

\(\Huge \checkmark \)

Answer 13

can you help with this one too? http://prntscr.com/5p46zd

Answer 14

same method,
did you try?

Answer 15

do i just use the same method?

Answer 16

\(\Large 17! = 17\times 16\times 15\times 14\times 13!\)

Answer 17

\(\large \dfrac{17\times 16\times 15\times 14}{4\times 3\times 2\times 1}\)

Answer 18

the answer would be 2,380

Answer 19

yes :)

Answer 20

ty!

Answer 21

welcome ^_^