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
1). In how many different ways, the letters of the word 'INHALE' can be arranged?
A). 720
B). 360
C). 120
D). 650
2). In how many different ways, the letters of the word 'ARMOUR' can be arranged?
A). 720
B). 300
C). 640
D). None of the above
3). In how many different ways, the letters of the word 'BANKING' can be arranged?
A). 5040
B). 2540
C). 5080
D). 2520
4). In how many different ways, can the letters of the word 'VENTURE' be arranged?
A). 840
B). 5040
C). 1260
D). 2520
5). How many different signals , can be made by 5 flags from 8 flags of different colors?
A). 6270
B). 1680
C). 20160
D). 6720


6). A child has four pockets and three marbles. In how many ways, the child can put the marbles in the pockets?
A). 12
B). 64
C). 256
D). 60
7). In how many different ways, can the letters of the word 'ASSASSINATION' be arranged, so that all S are together?
A). 10!
B). 14!/(4!)
C). 151200
D). 3628800
8). There is a 7-digit telephone number with all different digits. If the digit at extreme right and extreme left are 5 and 6 respectively, find how many such telephone numbers are possible?
A). 120
B). 100000
C). 6720
D). 30240
9). In a meeting between two countries, each country has 12 delegates, all the delegates of one country shakes hands with all delegates of the other country. Find the number of handshakes possible?
A). 72
B). 144
C). 288
D). 234
10). Find the number of ways, in which 12 different beads can be arranged to form a necklace.
A). 11! / 2
B). 10! / 2
C). 12! / 2
D). Couldn't be determined
Go to :
Total Pages : 12