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  • Question
  • How many arrangements of the letters of the word ?BENGALI? can be made if the vowels are never together.


  • Options
  • A. 120
  • B. 640
  • C. 720
  • D. 540

  • Correct Answer
  • 720 

    Explanation

    There are 7 letters in the word ?Bengali of these 3 are vowels and 4 consonants.

     

    Considering vowels a, e, i as one letter, we can arrange 4+1 letters in 5! ways in each of which vowels are together. These 3 vowels can be arranged among themselves in 3! ways.

     

    Total number of words = 5! x 3!= 120 x 6 = 720


  • Permutation and Combination problems


    Search Results


    • 1. In How many ways can the letters of the word 'CAPITAL' be arranged in such a way that all the vowels always come together?

    • Options
    • A. 360
    • B. 720
    • C. 120
    • D. 840
    • Discuss
    • 2. If A1, A2, A3, A4, ..... A10 are speakers for a meeting and A1 always speaks after, A2 then the number of ways they can speak in the meeting is

    • Options
    • A. 9!
    • B. 9!/2
    • C. 10!
    • D. 10!/2
    • Discuss
    • 3. Out of 6 green ball, 4 blue ball, in how many ways we selectone or more balls ?

    • Options
    • A. 42
    • B. 34
    • C. 31
    • D. 22
    • Discuss
    • 4. A box contains 2 blue balls, 3 green balls and 4 yellow balls. In how many ways can 3 balls be drawn from the box, if at least one green ball is to be included in the draw?

    • Options
    • A. 48
    • B. 24
    • C. 64
    • D. 32
    • Discuss
    • 5. In how many ways the word 'SCOOTY' can be arranged such that 'S' and 'Y' are always at two ends?

    • Options
    • A. 720
    • B. 360
    • C. 120
    • D. 24
    • Discuss
    • 6. There are 5 novels and 4 biographies. In how many ways can 4 novels and 2 biographies can be arranged on a shelf ?

    • Options
    • A. 26100
    • B. 21600
    • C. 24000
    • D. 36000
    • Discuss
    • 7. How many different words can be made using the letters of the word ' HALLUCINATION ' if all constants are together?

    • Options
    • A. 129780
    • B. 1587600
    • C. 35600
    • D. None of these
    • Discuss
    • 8. If a+b+c = 21, what is the total number of non - negative integral solutions?

    • Options
    • A. 123
    • B. 253
    • C. 321
    • D. 231
    • Discuss
    • 9. The number of signals that can be generated by using 5 differently coloured flags, when any number of them may be hoisted at a time is:

    • Options
    • A. 235
    • B. 253
    • C. 325
    • D. None of these
    • Discuss
    • 10. A Cricket team of 23 people all shake hands with each other exactly once. How many hand shakes occur ?

    • Options
    • A. 142
    • B. 175
    • C. 212
    • D. 253
    • Discuss


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