Preference

Question: Average of the five consecutive even number is 8. Which is the smallest of the 5 numbers?

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

Question: The cost of making x units is Y = 5x + 10, the average cost of making 10 units is--

  1. a.
    Tk. 5
  2. b.
    Tk.6
  3. c.
    Tk.7
  4. d.
    Tk.8
  5. e.
    Tk.9
Answer: b

Question:

If a3 - b3 = 513 and a - b = 3, then ab =?

  1. a.

    54

  2. b.

    55

  3. c.

    45

  4. d.

    34

Answer: a

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