Question

simplify 12C11

Answer 1

Hmm, not sure if this is a question @sushi323 - what exactly are you asking here?

Answer 2

@cshalvey im rlly confused i have never learned this before it asks me to simplify 12c11 and 12 and 11 are like exponents i think

Answer 3

@sushi323 are you familiar with factorials?

Answer 4

no i am not @igbasallote

Answer 5

basically factorials are like this \[n! = n \times (n-1) \times (n-2) \times \cdots \times 1\]
i know that's hard to understand so here's an example
\[2! = 2 \times 1\]
\[3! - 3\times 2 \times 1\]
\[4! = 4\times 3 \times 2 \times 1\]
\[5! = 5\times 4 \times 3 \times 2 \times 1\]
\[10! = 10 \times 9 \times 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1\]
do you understand it?

Answer 6

yea sorta... thanks @igbasallote

Answer 7

wait...

Answer 8

that was just an intro...that wasnt an explanation to your question yet :D

Answer 9

oh okay good haha cuz im still a little confused

Answer 10

here's the fun stuff:
\[\huge nCr \implies \frac{n!}{r!(n-r)!}\]
so..
\[\huge 12C11 \implies \frac{12!}{11!(12-11)!}\]

Answer 11

do you think you have an idea what that means?

Answer 12

sorta haha but not really....

Answer 13

okay...first step is to simplify (12-11)!

what is 12 - 11 equal to?

Answer 14

@igbasallote im sorry i just have never learned this stuff before:(

Answer 15

wait...you havent learned 12-11 yet? o.O

Answer 16

what? i guess not...i might have i just dont remember

Answer 17

....we're talking about arithmetic here...you know.. 1 + 1 = 2
2 + 2 = 4
15 - 10 = 5
etc...

Answer 18

ohh ya ive learned that....o.O sry haha

Answer 19

so what's 12 - 11?