বিবিধ (Miscellaneous) MCQ 7+

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• If * is defined for all positive real numbers a and b by a*b=ab/(a+b), then 10*2=?
  ক

  5/3

  খ

  5/2

  গ

  5

  ঘ

  20/3
• If n-5 is an even integer, what is the next large consecutive even integer?
  ক

  n-7

  খ

  n-3

  গ

  n-4

  ঘ

  n-2
• If the operation ^ is defined by the equation x ^ y = 2x + y, what is the value of a in 2 ^ a = a ^ 3 ?
  ক

  1

  খ

  -1

  গ

  4
• If the total cost C= 1000 + 0.2s, where 's' is the sales volume, the variable cost on sales of TK. 1000 will be Taka
  ক

  500

  খ

  400

  গ

  300

  ঘ

  200
• Eight telephone poles are each 15 feet apart. What is the distance, in feet, from the first to the last pole ?
  ক

  60

  খ

  85

  গ

  105

  ঘ

  120
• A clock loses ( falls behind ) 10 minutes each day. How many days will take to reach a point where the clock will indicate the correct time ?
  ক

  36

  খ

  72

  গ

  120

  ঘ

  None of these
• A farmer had 17 hens. All but 9 died. How many live hens were left?
  ক

  9

  খ

  8

  গ

  16