Below are the 2015 Grade 9 MTAP Math Challenge Division Oral Competition questions with answers.

**15-second question (2 points each)**

1.) Determine all positive number x that satisfy .

Answer: x = 2

2.) What is the fourth power of ?

Answer:

3.) Simplify

Answer:

4.) If a ♠ b = , what is the value of (3 ♠ 4) ♠ 12?

Answer: 13

5.) Suppose that *x*, *y* and *z* are positive integers such that *xy* = 6, *xz* = 10 and *yz* = 15. What is the value of *xyz*?

Answer: 30 Continue reading