Question

Evaluate the expression.

4
2

Answer 1

Mhm?

Answer 2

There's just a 4 and a 2, I'm not sure what you want us to do here :o

Answer 3

(4/2) evluate the expression

Answer 4

oh 4/2 = 2

Answer 5

I think that's what you're saying o_O

Answer 6

4 c 2

or

4 p 2

Answer 7

may be.. @iambatman

Answer 8

could u take screenshot of question u seeing and attach ha ? :)

Answer 9

^

Answer 10

ok hold on

Answer 11

\(\large \mathbb{\binom{4}{2}} \)

Answer 12

its read as \(\large ^4C_2\)

Answer 13

right

Answer 14

wow are good

Answer 15

@ganeshie8 He's the best! :P

Answer 16

I see

Answer 17

\(\large ^nC_r = \frac{n!}{(n-r)!r!}\)

Answer 18

\(\large ^4C_2 = \frac{4!}{(4-2)!2!}\)

Answer 19

u familiar wid factorials right ?

Answer 20

knw how to evaluate \(4!\) ?

Answer 21

naw

Answer 22

to take factorial of a number, simply multiply it wid all the natural numbers before that number :

\(4! = 4 \times 3 \times 2 \times 1\)

Answer 23

\(2! = 2\times 1\)

Answer 24

math is my weakest subject

Answer 25

Next, see if u can simplify below :

\(\large ^4C_2 = \frac{4!}{(4-2)!2!}\)

\(\large~~ ~~~~= ?\)

Answer 26

you're doing great :)

Answer 27

\(\large ^4C_2 = \frac{4!}{(4-2)!2!}\)

\(\large ^4C_2 = \frac{4!}{2!2!}\)

\(\large ^4C_2 = \frac{4\times 3 \times 2 \times 1}{2\times 1\times 2 \times 1}\)

\(\large ^4C_2 = \frac{24}{4}\)

\(\large ^4C_2 = 6\)

Answer 28

see if that makes more or less sense...

Answer 29

so do you see how many ways it can be multiplied

Answer 30

kindof yes