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  • Question
  • Some children goto ice-cream shop. 9 flavours are available there. Each child takes a cone with two different flavours. No two children take same combination and they have taken all such possible combinations. How many children went to ice cream shop ?


  • Options
  • A. 28
  • B. 56
  • C. 44
  • D. 36

  • Correct Answer
  • 36 

    Explanation

    Given there are 9 flavours of ice creams.

     

    Each child takes the combination of two flavours and no two children will have the same combination

     

    This can be done by  ways i.e children.

     

    Number of children= C 2 9   = 9 x 8 / 1x 2 = 36.

  • Tags: GATE, CAT, Bank Exams, AIEEE, Bank PO, Bank Clerk

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      Aarti can do a piece of work in 6 days. In how many days will she complete three time of work of same type?

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    • A. 18 days
    • B. 21 days
    • C. 3 days
    • D. 6 days
    • Discuss
    • 2. 
      750.0003 ÷ 19.999 =?

    • Options
    • A. 49
    • B. 18
    • C. 22
    • D. 38
    • Discuss
    • 3. 
      105, 85, 60, 30, 0, - 45, - 90?

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    • D. 60
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    • 4. 
      Let A = {1, 2, {3, 4}, 5}. Which of the following statements is true?

    • Options
    • A. {3, 4} ? A
    • B. {3, 4} ? A
    • C. 1 ? A
    • D. {1, 2, 5} ? A
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    • 5. 
      Two vessels A and B contains milk and water mixed in the ratio 5 : 3 and 2 : 3. When these mixtures are mixed to form a new mixture containing half milk and half water, they must be taken in the ratio ?

    • Options
    • A. 2 : 5
    • B. 3 : 5
    • C. 4 : 5
    • D. 7 : 3
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    • 6. 
      1, 2, 4, 8, 16, 32, 64, (...), 256?

    • Options
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    • 7. 
      A tree is 12 m tall and casts an an 8 m long shadow. At the same time, a flag pole caste a 100 m long shadow. How long is the flag pole?

    • Options
    • A. 150 m
    • B. 200 m
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    • 8. 
      8% of 96 =? of 1/25

    • Options
    • A. 19.2
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    • 9. A certain amount earns simple interest of Rs. 1750 after 7 years. Had the interest been 2% more, how much more interest would it have earned?

    • Options
    • A. Rs. 35
    • B. Rs. 245
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    • Discuss
    • 10. 
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    • Options
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