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Mathematics 11 Online
OpenStudy (anonymous):

A. 12/7 B. 8 C. 240 D. 480

OpenStudy (anonymous):

OpenStudy (igreen):

Same as last time.

OpenStudy (igreen):

\(\sf \dfrac{6 \times 5 \times 4 \times 3 \times 2 \times 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2}{7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 4 \times 3 \times 2}\)

OpenStudy (anonymous):

=)

OpenStudy (anonymous):

@iGreen

OpenStudy (anonymous):

why is there an ! marked there ?

OpenStudy (anonymous):

I'm not sure.

OpenStudy (igreen):

\(\sf \dfrac{\cancel 6 \times \cancel 5 \times \cancel 4 \times \cancel 3 \times \cancel 2 \times 8 \times \cancel 7 \times 6 \times 5 \times \cancel 4 \times \cancel 3 \times \cancel 2}{\cancel 7 \times \cancel 6 \times \cancel 5 \times \cancel 4 \times \cancel 3 \times \cancel 2 \times \cancel 4 \times \cancel 3 \times \cancel 2}\)

OpenStudy (igreen):

Which leaves us with?

OpenStudy (anonymous):

6x5

OpenStudy (igreen):

And 8

OpenStudy (igreen):

8 * 6 * 5

OpenStudy (igreen):

= ?

OpenStudy (anonymous):

you are going to have to teach me @iGreen

OpenStudy (anonymous):

240 ?

OpenStudy (igreen):

Yep, you got it.

OpenStudy (anonymous):

Oohh didn't see that so it would be 240

OpenStudy (igreen):

The exclamation mark tells you to multiply that number to all the whole numbers that come before it.

OpenStudy (anonymous):

Ohhhh

OpenStudy (anonymous):

i love you @iGreen

OpenStudy (igreen):

For example, \(\sf 12! \rightarrow 12 \times 11 \times 10 \times 9 \times 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1\)

OpenStudy (anonymous):

i see

OpenStudy (igreen):

But we can just leave out the 1, since multiplying by 1 doesn't change anything.

OpenStudy (anonymous):

@iGreen ddsae wouldnt remove something until i got alot of people can that be reported ?

OpenStudy (anonymous):

yeh

OpenStudy (igreen):

? ddsae?

OpenStudy (anonymous):

user name on here

OpenStudy (anonymous):

come to what i was on plz

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