Aysha has 8 pictures to hang over her couch. She wants to hang only 3 of them.
Find how many ways she can choose the 3 pictures from the 8 and arrange them in a row on the wall.
336 ways
108 ways
56 ways
24 ways

Question

Aysha has 8 pictures to hang over her couch.  She wants to hang only 3 of them.
Find how many ways she can choose the 3 pictures from the 8 and arrange them in a row on the wall. 
336 ways
108 ways
56 ways
24 ways

inkyvoyd · Answer

8*7*6;336

apoorvk · Answer

336 ways.
 no. of ways of choosing and arranging r things from a pile of n things is 

$$^{n}\Pr = (n!)/(n-r)!$$