Preference

Question: In the equation: 31(m - n) - 32(m - n) + (m - n) =?

  1. a.
    -n
  2. b.
    -m
  3. c.
    0
  4. d.
    1
  5. e.
    None of these
Answer: c

Question: f(x) = -1 for all x > 0. If f(a) = -1 and f(ab) = -1 then b =?

  1. a.
    1
  2. b.
    3
  3. c.
    -1
  4. d.
    -3
  5. e.
    None of these
Answer: a, b

Question: If 5(3x - 7) = 20, then what is the value of (3x - 8)?

  1. a.
    11/3
  2. b.
    3
  3. c.
    0
  4. d.
    3/4
Answer: b

Question: If 1/x > 1/y, then which of the following must be true?

  1. a.
    y > x
  2. b.
    x > y
  3. c.
    x < 0
  4. d.
    y < 0
  5. e.
    None of these
Answer: a

Question:

If x2 + 4x + 13 = 1 + x2, then find out the value of x2?

  1. a.

    9

  2. b.

    0

  3. c.

    4

  4. d.

    7

Answer: a

Question: If 6x - 14 < 8x + 2 which of the following must be true?

  1. a.
    x < 2
  2. b.
    x > 8
  3. c.
    x < 8
  4. d.
    x > -8
  5. e.
    None of these
Answer: d

Question:

If x + y = a and x - y = b, then 2xy =

  1. a.

    (b2 - a2)/2

  2. b.

    (a2 - b2)/2

  3. c.

    (a - b)/2

  4. d.

    ab/2

  5. e.

    (a2 + b2)/2

Answer: b

Question: If 3x/(1 + x) = 1, then x =?

  1. a.
    -1
  2. b.
    2
  3. c.
    10
  4. d.
    1
  5. e.
    None of these
Answer: d

Question: If (3x + 2y) = 8 and (2x - y) = 3 find the value of 'x'.

  1. a.
    2
  2. b.
    3
  3. c.
    4
  4. d.
    6
  5. e.
    None of these
Answer: a

Question: If x + 2y = 4, and x/y = 2 then determine the value of x and y.

  1. a.
    1, 2
  2. b.
    2, 4
  3. c.
    2, 1
  4. d.
    3, 4
Answer: c

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