NDA MATHEMATICS QUIZ - 5

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Question 1:

The number of ways in which a mixed double game of badminton can be arranged from amongst 8 married couples if no husband and wife play in the same game is:

Question 2:

The number of proper divisors of 9600 is:

Question 3:

In a meeting certain number of persons were invited. After the meeting was over everybody shook hands with the other. If total number of hand shakes was 120 then the number of people invited will be:

Question 4:

The number of ways in which 9 beads of different colours be string as a necklace is -

Question 5:

Number of ways in which 5 girls can be seated around a round table in four chairs of different colours is:

Question 6:

The total number of diagonals in a polygon having 11 sides will be

Question 7:

How many number of five digits can be formed by using the digits $0,1,2,3,4$ and 5 if repeatition of digits is allowed ?

Question 8:

Four dice are rolled . The number of possible out comes in which at least one die shows 5 is.

Question 9:

If ${ }^{a+b} p_{2}=90$ and ${ }^{a-b} p_{2}=30$ then ab equals.

Question 10:

The number of ways in which we can post 4 letters in 9 letter boxes is.