Question

Evaluate 6! + 5.
i really dont understand this question someone explain help!

Answer 1

Do you understand what 6! means?

Answer 2

no what does it mean?

Answer 3

6! means that you multiply 6 by 5! Which in turn means you multiply 5 by 4! and so on. So if you define it recursively (which is what your last question was one, you get that\[1!=1\]and \[n!=n\cdot(n-1)!\]

Answer 4

Given this, can you tell me what 2! and 3! are?

Answer 5

2!=2
3!=6 ?

Answer 6

Bingo. So 4! =?

Answer 7

12 :)

Answer 8

Not quite. What \(4\cdot 3!\)?

Answer 9

ooh! 24!

Answer 10

so 6!+5 = 6*5 = 30+5 = 35???

Answer 11

24 is correct. Your guess for 6!+5 is not quite there yet though. what do you get for these?
5!=?
6!=?

Answer 12

20 amd 30

Answer 13

ooo!

Answer 14

wait no keep explaining lol

Answer 15

you know 4!=24. Also, \(5!=5\cdot4!\) what is this?

Answer 16

20

Answer 17

\(5\cdot4!=5\cdot24\neq20\)

Answer 18

I'll assume you just had a typo and meant to type 120, since \(5\cdot24=120\) :)

One more to go.

What's \(6\cdot5!\)?

Answer 19

OOOH! so is it going to be 5! = 5*4times 3times 2 times1 = 120 ??

Answer 20

lol yea, thanks

Answer 21

5!=20*6 = 120

Answer 22

george can you give me the answer and explain it on the way the step by step thing it makes me confused if i see how you got the answer it would be more helpful <3 like explain it on the way of getting the answer so i can understand on future problems like this

Answer 23

One more try. What do you think 6! is?

PS. The way you described 5! = 5times4times 3times 2 times1 = 120 is a good way to think about if you're uncomfortable with the recursive way.

Answer 24

okay yea so then 6! = 6.5.4.3.2.1 = 720

Answer 25

?

Answer 26

Perfect!

Answer 27

omg! :)

Answer 28

OKAY SO NOW WHAT???

Answer 29

Now you have 6!=720. What's 720+5?

Answer 30

725!

Answer 31

woot woot thanks george u truely are amazing youve helped me with a lot of stuff! :) thanks so much you might see me with more questions though ahah.. but i appreciate all the time you took to help me

Answer 32

really do! <3

Answer 33

You're welcome. Let me know if you need more explanation with this problem.

As a side note, if you were to use this in a conversation, "6 factorial" is how you would say 6!

Answer 34

THANK! :)!!!