logo

CuriousTab

CuriousTab

Discussion


Home Aptitude Permutation and Combination Comments

  • Question
  • In how many ways, a cricket team of 11 players can be made from 15 players, if a particulars player is always chosen?


  • Options
  • A. 1835
  • B. 1001
  • C. 1635
  • D. 1365

  • Correct Answer
  • 1001 

    Explanation

    Since, particular player is always chosen. It means that 11 - 1 = 10 players are selected out of the remaining 15 - 1 = 14 players.

    ? Required number of ways = 14C10
    = 14 ! / (10! x 4!)
    = (14 x 13 x 12 x 11) / (4 x 3 x 2 x 1)
    = 7 x 13 x 11
    = 91 x 11
    = 1001


  • Permutation and Combination problems


    Search Results


    • 1. 
      In how many ways, a committee of 3 men and 2 women can be formed out of a total of 4 men and 4 women?

    • Options
    • A. 15
    • B. 16
    • C. 20
    • D. 24
    • Discuss
    • 2. 
      How many necklaces of 12 beads can be made from 18 beads of various colours?

    • Options
    • A. [118 x 13!] / 2
    • B. [110 x 14! ] / 2
    • C. [119 x 13!] / 2
    • D. [110 x 12!] / 2
    • Discuss
    • 3. 
      In how many different ways, 5 boys and 5 girls can sit on a circular table, so that the boys and girls are alternate?

    • Options
    • A. 2880
    • B. 2800
    • C. 2680
    • D. 2280
    • Discuss
    • 4. 
      20 persons were invited to a party. In how many ways, they and the host can be seated at a circular table?

    • Options
    • A. 18 !
    • B. 19 !
    • C. 20 !
    • D. Couldn't be determined
    • Discuss
    • 5. 
      Find the number of ways, in which 12 different beads can be arranged to form a necklace .

    • Options
    • A. 11 !/2
    • B. 10 !/2
    • C. 12 !/2
    • D. Couldn't be determined
    • Discuss
    • 6. 
      There is a polygon of 12 sides . How many triangles can be drawn using the vertices of polygon?

    • Options
    • A. 200
    • B. 220
    • C. 240
    • D. 260
    • Discuss
    • 7. 
      Find the number of diagonals formed in hexagon .

    • Options
    • A. 12
    • B. 10
    • C. 6
    • D. 9
    • Discuss
    • 8. 
      There are 10 points in a plan, out of which 5 are collinear. Find the number of straight lines formed by joining them.

    • Options
    • A. 36
    • B. 45
    • C. 30
    • D. 35
    • Discuss
    • 9. 
      In how many ways, 12 balls can be divided between 2 boys, one receiving 5 and the other 7 balls?

    • Options
    • A. 1784
    • B. 1584
    • C. 1854
    • D. 1560
    • Discuss
    • 10. 
      Find the number of combinations that can be formed with 5 oranges, 4 mangoes and 3 bananas, when one fruit of each kind is taken.

    • Options
    • A. 60
    • B. 120
    • C. 110
    • D. 75
    • Discuss


    Comments

    There are no comments.

Enter a new Comment