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

Answer 1

8*7*6;336

Answer 2

336 ways.
no. of ways of choosing and arranging r things from a pile of n things is

\[^{n}\Pr = (n!)/(n-r)!\]