1. Which of the following is not a hexadecimal number? (A) 999 (B) (hex)23 (C) 0x556 (D) 0x1F2   (A)   (A), (B) & (C)   (A) & (B)   (C)   Hint Half-n-half Clue   2. If not assigned a value, a variable of type char has the following default value:   '\u0000'   '\uffff'   '\u0001'   " " (space)   Half-n-half Clue   3. (1 | 4) + (4 & 2) = ? (in base ten)   1   2   8   5   3   Half-n-half Clue   4. Consider the following code: int x, y, z; y = 1; z = 5; x = 0 - (++y) + z++; After execution of this, what will be the values of x, y and z?   x = -7, y = 1, z = 5   x = 4, y = 2, z = 6   x = 3, y = 2, z = 6   x = 4, y = 1, z = 5   Half-n-half Clue   5. 27 | 8 = ?   19   8   35   27   Half-n-half Clue   6. 15 & 29 = ?   13   44   12   14   Half-n-half Clue   7. Select the invalid assignment statements from the following: (A) float x = 238.88; (B) double y = 0x443;   (A) & (C)   (B) & (D)   (A) & (B)   (B)   Half-n-half Clue