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  • Question
  • The letters of the word CASTIGATION is arranged in different ways randomly. What is the chance that vowels occupy the even places ?


  • Options
  • A. 0.04
  • B. 0.043
  • C. 0.047
  • D. 0.05

  • Correct Answer
  • 0.043 

    Explanation

     Vowels are A I A I O, 

     

     C    A   S    T   I    G   A    T   I    O   N

     

    (O) (E) (O) (E) (O) (E) (O) (E) (O) (E) (O)

     

    So there are 5 even places in which five vowels can be arranged and in rest of 6 places 6 constants can be arranged as follows :

     

    n ( E ) = 5 P 5 2 ! * 2 ! ( A , I   a r e   2   t i m e s ) * 6 P 6 2 ! ( T   i s   2   t i m e s ) = 21600

     

    n ( S ) = 11 ! 2 ! * 2 ! * 2 ! ( A ,   I   a r e   2   t i m e s ) = 4989600

     

    21600 4989600 = 0 . 043


  • More questions

    • 1. 445, 221, 109, 46, 25, 11, 4

    • Options
    • A. 221
    • B. 109
    • C. 46
    • D. 25
    • E. 11
    • Discuss
    • 2. 
      A boat cover a distance of 30 km downstream in 2 h while it takes 6 h to cover the same distance distance upstream. What is the speed of the boat (in km/h)?

    • Options
    • A. 5
    • B. 7.5
    • C. 13
    • D. 10
    • Discuss
    • 3. 
      A 220 m long train passes a signal post in 12 s. Find the speed f the train.?

    • Options
    • A. 72 km/h
    • B. 60 km/h
    • C. 66 km/h
    • D. 69 km/h
    • Discuss
    • 4. 
      The banker's gain on a bill due 2 years hence at 5% is Rs. 8, find the present worth of the bill?

    • Options
    • A. Rs. 800
    • B. Rs. 650
    • C. Rs. 750
    • D. Rs. 850
    • Discuss
    • 5. 
      The value of $ \frac{\log_{a}{x}}{\log_{ab}{x}} - \log_{a}{b}$ is?

    • Options
    • A. 0
    • B. 1
    • C. a
    • D. ab
    • Discuss
    • 6. 
      If x = 2 + ?3, then the value of ?x +
      1
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    • Options
    • A. ?3
    • B. ?6
    • C. 2 ?6
    • D. 6
    • Discuss
    • 7. 
      A shopkeeper marked 50% more price than cost price of the article . If he allows 30% discount to his customers, then his profit per cent is

    • Options
    • A. 5%
    • B. 10%
    • C. 12%
    • D. 15%
    • Discuss
    • 8. 
      Find 2 consecutive positive odd integers whose squares have the sum 290.

    • Options
    • A. 11, 13
    • B. 13, 15
    • C. 9, 11
    • D. None of these
    • Discuss
    • 9. 
      ?. 18x 2 + 18x + 4 = 0
      ?. 12y 2 + 29y + l4 = 0

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
    • Discuss
    • 10. 
      One root of the quadratic equation x2 - 5 x + 6 = 0 is 3. Find the other root.

    • Options
    • A. 2
    • B. ?2
    • C. 1
    • D. ?1
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