Find the number of ways in which mixed double tennis game can be arranged amongst 9 married couples if no husband and wife play in the same game
1515
1500
1512
1550
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1
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From among the 36 students in a class, one leader and one class representative are to be appointed. In how many ways can this be done?
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2
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In how many different ways can the letters of the word 'DETAIL' be arranged in such a way that the vowels occupy only the odd positions?
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3
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The number of circles that can be drawn out of 10 points of which 7 are collinear is
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4
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In how many ways can 10 people line up at a ticket window of a railway station?
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5
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If A and B are two independent events with P(A) = 3/5 and P(B) = 4/9 , then P(A' ∩ B' ) equals
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6
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A, B, C, and D are four points, any three of which are noncollinear. Then, the number of ways to construct three lines each joining a pair of points so that the lines do not form a triangle is
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7
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In how many ways can a cricketer can score 200 runs with fours and sixes only?
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8
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A coin is tossed 5 times. What is the probability that head appears an odd number of times?
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9
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If P(A)=2/5, P(B)=3/10 and P(A ∩ B) =51, then P(A'  B'). P(B'  A') is equal to
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10
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A polygon has 44 diagonals. What is the number of its sides?
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