Permutation and combination Questions and answers

  1. Aptitude
    1. Compound interest
    2. Boat and Stream
    3. Trains
    4. Percentage
    5. Discount
    6. Mixture and Allegation
    7. Unitary Method
    8. Work and Wages
    9. Pipes and Cisterns
    10. Linear Equations
    11. Approximation
    12. Word problems
    13. Number System
    14. Time and Distance
    15. Average
    16. Ratio and Proportions
    17. Profit and Loss
    18. Partnership
    19. Permutation and combination
    20. Probability
    21. Problem on ages
    22. Time and work
    23. Simple and compound interest
    24. Mensuration
    25. Number series
51). Any teacher can be included in the committee?
A). 626
B). 718
C). 924
D). 844
52). In how many different ways can the letters of the word 'PRAISE' be arranged?
A). 720
B). 610
C). 360
D). 210
53). On a shelf there are 4 books on Economics, 3 books on Management and 4 books on Statistics. In how many different ways can the books be arranged so that the books on Economics are kept together?
A). 967680
B). 120960
C). 5040
D). 40320
54). In how many different ways can the letters of the word ' THERAPY ' be arranged so that the vowels never come together?
A). 720
B). 1440
C). 5040
D). 3600
55). In how many ways the letters of the word VISITING can be rearranged?
A). 6720
B). 5720
C). 720
D). 7620


56). In how many different ways can the letters of the word 'REPLACE' be arranged?
A). 2630
B). 5040
C). 1680
D). None of these
57). In how many ways the letters of the word SACRED can be arranged so that vowels come together?
A). 240
B). 120
C). 320
D). 720
58). In how many different ways can the letters of the word RUMOUR be arranged?
A). 180
B). 720
C). 30
D). 90
59). In how many different ways can the letters of the word 'CANDIDATE' be arranged in such a way that the vowels always come together?
A). 4320
B). 1440
C). 720
D). 840
60). A committee of five members is to be formed out of 3 trainees, 4 professors and 6 research associates. In how many different ways this can be done if the committee should have all the 4 professors and 1 research associate or all 3 trainees and 2 professors?
A). 15
B). 18
C). 25
D). 12
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