Preference

Question: Babu's income is Tk.1000 more than that of Selim. Their total salary is Tk.x. What is Selim's salary?

  1. a.
    x/2 - 500
  2. b.
    (x + 1000)/2
  3. c.
    (2x - 500)/2
  4. d.
    2x - 1000
  5. e.
    None of these
Answer: a

Question:

Which of the following describes all values of x for which 1 - x2 ≥ 0?

  1. a.

    x ≥ 1

  2. b.

    x ≤ - 1

  3. c.

    0 ≤ x ≤ 1

  4. d.

    x ≤ - 1 or x ≥ 1

  5. e.

    - 1 ≤ x ≤ 1

Answer: c

Question: If x + y > 5 and x _ y > 3, then which of the following gives all & only possible values of x?

  1. a.
    x > 4
  2. b.
    x < 5
  3. c.
    x > 5
  4. d.
    x < 3
  5. e.
    x > 3
Answer: a

Question: If the product of 20% of 85 and 40% of 45 is divided by 4, the result would be--

  1. a.
    76.5
  2. b.
    77
  3. c.
    76.3
  4. d.
    75.3
  5. e.
    67.5
Answer: a

Question: If 2x + 2y = 7z, then what is the average of x, y and z?

  1. a.
    1.5z
  2. b.
    3z
  3. c.
    2z + 1
  4. d.
    z/3
  5. e.
    None of these
Answer: a

Question: If x + y = 1 and x - y = 5, then what x is equal to?

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

Question:

If 0 < a2 < b, which of the following statements is/are always true? i. a < b/a ii. a4 < a2b iii. a2/b < 1

  1. a.

    i only

  2. b.

    i and ii

  3. c.

    ii and iii

  4. d.

    i and iii

  5. e.

    i, ii and iii

Answer: c

Question:

(2uv)2 + (u2 - v2)2 =?

  1. a.

    2uv

  2. b.

    (u2 + v2)2

  3. c.

    u2 + v2

  4. d.

    (2uv)2 + (u2 + v2)2

Answer: b

Question:

If x = 4, then (x2 + x1/2) =?

  1. a.

    16

  2. b.

    18

  3. c.

    20

  4. d.

    8

Answer: b

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