Question

10*9*8*7*6*5*4*3*2*1 = 10!
Can this be true?! Why or why not?

hihi @FoolForMath >:)))

Answer 1

Yes ,Why not ?

Answer 2

Of course its true

Answer 3

lol =)) prove :ppp

Answer 4

Depends on the definition of 10! and what do you mean by the operation of '*'

Answer 5

those are multiplication symbols

Answer 6

Then this is true:)

Answer 7

lol, use a calculator.

Answer 8

10*9*40320

Answer 9

both sides = 3628800

Answer 10

Then this is true. 10! is 3628800 and the L.H.S 10*9*8*7*6*5*4*3*2*1 = 3628800 hence QED.

Answer 11

Silly problem! NEXT :P

Answer 12

oh...okay..i thought that was hard...

Answer 13

lol, "hard" even a 5 year old can do it. :P

Answer 14

Mimi is super amazing 10 year old kid ;)

Answer 15

a*

Answer 16

\[n!= \prod_{k=1}^{n}k=1*2*3*...*n\]
This is the definition which would prove why it's correct.

Answer 17

@Mimi_x3 not really... at least my sis won't know, she hasn't learnt factorial yet!

Answer 18

Guys I think it's becoming a medal party!!!!!

Answer 19

\[n \in \mathbb{N}\]

Answer 20

it is good to see some Pi notation @Noliec

Answer 21

@Callisto I'm sure that your sister is able to use a calculator.

Answer 22

Yes, even so, she won't know what is the right button :(