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The total number of ways of selecting 3 ...

The total number of ways of selecting 3 balls from a bag containing 7 balls is

A

`7P_(3)`

B

71

C

31

D

`7C_(3)`

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The correct Answer is:
D
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NEW JOYTHI PUBLICATION-PERMUTATIONS AND COMBINATIONS-EXERCISE
  1. C(15,12)=

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  2. The number of ways of selecting 6 objects from eight objects is

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  3. The total number of ways of selecting 3 balls from a bag containing 7 ...

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  4. The total number of ways of selecting a team of 3 men and 4 women from...

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  5. The value of ""^(n)P(1)+(""^(n)P(2))/(2!)+(""^(n)P(3))/(3!)+......+(""...

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  6. The number of ways of selecting 3 objects from eight object is

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  7. A candidate is required to answer 7 questions out of 12 questions, whi...

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  8. The number of diagonals in a polygon of seven sides is

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  9. A polygon has 77 diagonals. The number of sides of the polygon is

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  10. If a set of m paralled lines intersect another set of n parallel lines...

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  11. Everybody in a room shakes hands with everybody else. The total n...

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  12. There are 10 points in a plane no three of which are collinear except ...

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  13. There are 10 true or false questions in an examination. Number of ways...

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  14. In an examination there are 4 multiple choice questions and each quest...

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  15. The number of ways in which 19 different objects can be divided into t...

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  16. The number of ways in which 12 people may be divided into three sets o...

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  17. The number of ways in which 10 people can be assigned to two triple an...

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  18. The vertices of a triangle are at the vertices of an octagon. The numb...

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  19. The number of rectangles in the following figure is

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  20. The number of ways in which 11 identical pencils can be distributed am...

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