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  • Question
  • A committee of 4 people is to be formed from a group of 9 people.How many possible committees can be formed?


  • Options
  • A. 120
  • B. 162
  • C. 126
  • D. 170

  • Correct Answer
  • 126 

    Explanation

    This question is a combination since order is not important.

     

    Answer =  7 C 3  = 126


  • Permutation and Combination problems


    Search Results


    • 1. Goldenrod and No Hope are in a horse race with 6 contestants. How many different arrangements of finishes are there if No Hope always finishes before Goldenrod and if all of the horses finish the race?

    • Options
    • A. 720
    • B. 360
    • C. 120
    • D. 640
    • Discuss
    • 2. In how many ways, can zero or more letters be selected form the letters AAAAA?

    • Options
    • A. 5
    • B. 6
    • C. 2
    • D. 8
    • Discuss
    • 3. In how many ways can the letters of the word 'MISSISIPPI' be arranged ?

    • Options
    • A. 12400
    • B. 11160
    • C. 16200
    • D. 12600
    • Discuss
    • 4. There are 2 brothers among a group of 20 persons. In how many ways can the group be arranged around a circle so that there is exactly one person between the two brothers?

    • Options
    • A. 18! x 19!
    • B. 2 x 19!
    • C. 2 x 18!
    • D. 18! x 18!
    • Discuss
    • 5. Eight first class and six second class petty officers are on the board of the 56 club. In how many ways can the members elect, from the board, a president, a vice-president, a secretary, and a treasurer if the president and secretary must be first class petty officers and the vice-president and treasurer must be second class petty officers?

    • Options
    • A. 1500
    • B. 1860
    • C. 1680
    • D. 1640
    • Discuss
    • 6. A pizza can have 3 toppings out of possible 7 toppings.How many different pizza's can be made?

    • Options
    • A. 49
    • B. 35
    • C. 27
    • D. 25
    • Discuss
    • 7. How many ways can you select 17 songs for mix CD out of possible 38 songs?

    • Options
    • A. 2878
    • B. 2878 x 10^2
    • C. 290183753
    • D. 2878 x 10^10
    • Discuss
    • 8. A school committee of 5 is to be formed from 12 students.How many committees can be formed if John must be on the committee?

    • Options
    • A. 11P4
    • B. 11C4
    • C. 11P5
    • D. 11C5
    • Discuss
    • 9. From a deck of 52 cards, a 7 card hand is dealt.How many distinct hands are there if the hand must contain 2 spades and 3 diamonds ?

    • Options
    • A. 7250100
    • B. 7690030
    • C. 7250000
    • D. 3454290
    • Discuss
    • 10. From a deck of 52 cards, a 5 card hand is dealt.How may distinct five card hands are there if the queen of spades and the four of diamonds must be in the hand?

    • Options
    • A. 52C5
    • B. 50C3
    • C. 52C4
    • D. 50C4
    • Discuss


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