# Mathematics

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# Question: Which of the following must be odd? I. The product of two even numbers II. The product of two odd numbers III. The sum of an odd and an even number

1. a.
I only
2. b.
II and III only
3. c.
I and III only
4. d.
I, II and III
5. e.
None
Answer: b

1. a.
12, 5
2. b.
13, 4
3. c.
14, 3
4. d.
24, 10
Answer: a

1. a.
69
2. b.
73
3. c.
75
4. d.
83
5. e.
none of them
Answer: d

# Question: If the sum of 3 consecutive integers is 150, then the sum of the two smaller integers is:

1. a.
99
2. b.
139
3. c.
110
4. d.
none of these
Answer: a

1. a.
12.5
2. b.
2.5
3. c.
50
4. d.
125
Answer: a

1. a.
190
2. b.
182
3. c.
176
4. d.
154
5. e.
142
Answer: a

1. a.
4
2. b.
5
3. c.
2
4. d.
3
5. e.
None
Answer: c

1. a.
888889
2. b.
899999
3. c.
999888
4. d.
988888
5. e.
None of them
Answer: b

# Question: If x is negative, which of the following must also be negative?

1. a.

(-x3)2

2. b.

(-1)x

3. c.

1 - x

4. d.

x3 - x2

5. e.

None of these

Answer: d

# Question: If X is an odd integer and Y is an even integer, which of the following statements is(are) always true? I. X + Y is odd II. XY is odd III. X + 2Y is even

1. a.
I only
2. b.
II and III only
3. c.
I and III only
4. d.
III only
Answer: a

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