**Problem : **
What is the 5^{th} entry in Row 12 of Pascal's Triangle?

*C*(12, 4) = 495.

**Problem : **
What is the 3^{rd} entry in Row 10 of Pascal's Triangle?

*C*(10, 2) = 45.

**Problem : **
What is the 7^{th} entry in Row 9 of Pascal's Triangle?

*C*(9, 6) = 84.

**Problem : **
What is the 15^{th} entry in Row 15 of Pascal's Triangle?

*C*(15, 14) = 15.

**Problem : **
If the *r*^{th} entry in Row 6 of Pascal's Triangle is 15, what are the possible
values of
*r*?

*r* = 3 or

*r* = 5.