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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

Question: The sum of two positive integers multiplied by the bigger number is 204, and their difference multiplied by the smaller number is 35. The numbers are:

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

Question: What is the least integer that is a sum of three different primes each greater than 20?

  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

Question: What number should be devided by √0.25 to give the result as 25?

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

Question: The first 5 numbers in a regular esquence are 4, 10, 22, 46 and 94. What is the next number in the sequence?

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

Question: Sum of 3 consucutive integers is 18. What is the smallest integer less 3?

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

Question: What is the difference between the 6 digit largest and the smallest numbers?

  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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