If (n + 2)! = 2550 (n!); find ’n’
49
35
38
43
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1
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A fair coin is tossed 5 times. What is the probability of getting at least three heads on consecutive tosses?
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2
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A committee of 8 members is to be selected from a group of 12 male and 10 female members. In how many ways the committee is selected such that at most two and at least one male member are there in the committee?
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3
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The number of triangles that can be formed by choosing the vertices from a set of 12 points, seven of which lie on the same straight line, is
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4
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A biased coin in tossed thrice. What is the probability that heads turns out at least twice considering that the probability of a head is 60%?
Solution 
5
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From a group of 7 men and 6 women, five persons are to be selected to form a committee so that at least three men are in the committee. In how many ways can it be done?
Solution 
6
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There are 8 orators A, B, C, D, E, F, G, and H. In how many ways can the arrangements be made so that A always comes before B and B always comes before C.
Solution 
7
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12 person are seated at a round table. Number of ways of selecting 2 persons not adjacent to each other is
Solution 
8
Discuss

How many fourdigit numbers, each divisible by 4 can be formed using the digits 5, 6, 7, 8, 9, repetition of digits being allowed in any number?
Solution 
9
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How many integers between 1000 and 10000 have no digits other than 4, 5, or 6?
Solution 
10
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Seven different objects must be divided among three people. In how many ways can this be done if one or two of them must get no objects?
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