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Permutations and Combinations Questions

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Permutations and Combinations Questions




1:

Total number of words formed by 2 vowels and 3 consonants taken from 4 vowels and 5 consonants is equal to

 

A.

60


B.

120


C.

7200


D.

none of these


  Answer Report Discuss

2:

The number of different permutations of the word BANANA is


A.

720


B.

60


C.

120


D.

360


  Answer Report Discuss

3:

There are four bus lines between A and B; and three bus lines between Band C.

The number of way a person roundtrip by bus from A to C by way of B will be


A.

12


B.

48


C.

144


D.

264


  Answer Report Discuss

4:

In how many ways can 5 red and 4 white balls be drawn from a bag containing 10 red and 8 white balls?


A.

8C5  x 10C4


B.

10C5  x  8C4


C.

18C9


D.

None of these


  Answer Report Discuss

5:

The number of diagonals that can be drawn by joining the vertices of an octagon is


A.

28


B.

48


C.

20


D.

none of these


  Answer Report Discuss

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