exam Maths Puzzle

The number of ways which a mixed double tennis game can be arranged amongst 9 married couples if no husband and wife play in the same is:

A.

1514

B.

1512

C.

3024

D.

3028

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exam Other Question

There are five comics numbered from 1 to 5. In how many ways can they be arranged, so that part-1 and part-3 are never together?

A.

48

B.

72

C.

120

D.

210
Ten coins are tossed simultaneously. In how many of the outcomes will the third coin turn up a head?

A.

210

B.

29

C.

3×28

D.

None of these