1. If x is negative and (x - 3)2 = 49, then x3 is equal to   10   -4   52   1000   -64   Hint Half-n-half Clue   2. If x is negative and (x - 5)2 = 81, then x2 is equal to   196   16   14   -4   86   Half-n-half Clue   3. If a / b = - 2 / 3, then b3 / a3 is equal to   27 / 8   - 8 / 27   - 27 / 8   9 / 4   8 / 27   Half-n-half Clue   4. If a is an odd number and b is an even number, then which of the following must be an even number ?   ab + 1   2b + a   a + b + 2   2a + b   a + b   Half-n-half Clue