6. The value of 12C3 is
- 440
- 36
- 220
- 1320
7. 27 ^2/3=
- 1/9
- 18
- 9
- 1/18
8. The expression 4y² + 5y – 6 is equivalent to
- (2y – 3)(2y – 2)
- (4y – 3)(y + 2)
- (4y – 1)(y + 6)
- (2y – 1)(2y + 6)
9. A circle has the equation x² + y² = 16. The radius of this circle is
- 256
- 8
- 4
- 16
10. P: n is an even number ----> n² + n is an even number. Which of the following is true?
- P is false but its converse is true
- P and its converse are both true
- P is true but its converse is false
- P and its converse are both false
