Aysha has 8 pictures to hang over her couch. She wants to hang only 3 of them.
1. Find how many ways she can choose the 3 pictures from the 8.

Question

Aysha has 8 pictures to hang over her couch.  She wants to hang only 3 of them.
1.   Find how many ways she can choose the 3 pictures from the 8.

anonymous · Answer

$$ 8 \times 7 \times 6 = 336 $$

anonymous · Answer

It shows that these are the possible answers.. 
24 ways
56 ways
108 ways
28 ways

anonymous · Answer

but the next question is..
 Find how many ways she can choose the 3 pictures from the 8 and arrange them in a row on the wall. 
and the possible answers to THAT is..
336 ways
108 ways
56 ways
24 ways

kropot72 · Answer

$$nCr=\frac{n!}{r!(n-r)!}=\frac{8!}{3!\times 5!}$$

kropot72 · Answer

The correct choice is 56 ways

anonymous · Answer

Aww I missed the choose, I was answering your next question then ;)

anonymous · Answer

So it's basically like this when you have choose you are selecting hence 8 C 3 but when you are arranging then it's 9 P 3

anonymous · Answer

Ooooh ok! That makes since!

anonymous · Answer

sorry *sense haha

kropot72 · Answer

For the second question:
$$nPr=\frac{n!}{(n-r)!}=8\times 7\times6=336 ways$$

anonymous · Answer

Ohh ok! thanks you guys!! :)

anonymous · Answer

I wish i could pick both of you for best answer but ill just become fans with both of you!

kropot72 · Answer

You're welcome :)

anonymous · Answer

Other person is off so ill just pick you for best answer :)