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Banking Sample Paper SBI PO (Main) Sample Test Paper-7

  • question_answer
    How many words can be formed from die letters of word DIRECTOR so that the vowels always come together?

    A)  1600                           

    B)  2160        

    C)  2040                           

    D)  3230        

    E)  1800

    Correct Answer: B

    Solution :

     In the given word, we treat the vowels IEO as one letter. Thus, we have RECTR (IEO) Thus, group has 6 letters in which R occurs twice and other letters are different. \[\therefore \] Number of ways of arranging these letters\[=\frac{6!}{2!}=360\] Now 3 vowels can be arranged among themselves in 3! = 6 ways \[\therefore \]Reqd number of ways \[=360\times 6=2160\]


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