SOLUTION: Phil has 4 books to read but cannot take them all on vacation. Use Pascal’s triangle to find the number of ways he can choose 3 books.

Question 1146056: Phil has 4 books to read but cannot take them all on vacation. Use Pascal’s triangle to find the number of ways he can choose 3 books.
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
1
1--2--1
1--3--3--1
1--4--6--4--1
0--1--2--3--4 books
There are 3 ways to choose them.
Answer by ikleyn(52787) (Show Source): You can put this solution on YOUR website!
.

The number of ways is = 4.

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