1. The sum of the product and quotient of 9 and 9 is   1   18   28   81   82   Hint Half-n-half Clue   2. Which of the following is not a prime factor of 390?   2   3   5   7   13   Half-n-half Clue   3. If a is a positive integer, which of the following is not defined?   a multiplied by 1   a multiplied by 0   a divided by 1   0 divided by a   a divided by 0   Half-n-half Clue   4. Mike tests an electronic component in 22 minutes, whereas Nick takes only 14 minutes. If both electronic engineers start testing at 2:00 p.m., what is the first time they will finish testing a component at the same time?   3:54 p.m.   4:34 p.m.   4:54 p.m.   5:08 p.m.   7:08 p.m.   Half-n-half Clue   5. Which of the following is not a multiple of 9?   27   36   37   54   99   Half-n-half Clue   6. Which of these is not a divisor (factor) of 112?   7   8   12   14   28   Half-n-half Clue   7. A three-digit number has 8 as its last digit. The first digit is thrice the second digit, and the difference between the last two digits is 5. The number is   358   398   839   893   938   Half-n-half Clue