MBA Exam

There are 6 straight lines in a plane, no 2 of which are parallel and no 3 of which pass through the same point. If their points of intersection are joined, then the number of additional lines thus introduced is

1) 45
2) 78
3) 105
4) None of these

Read Solution (Total 1)

105-6*10=45
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MBA Other Question

there are 3 states and 3 students from each state. In how many ways 5 students can be selected, so that at least 1 student is chosen from each state......

1) 405
2) 108
3) 81
4) 144
If a,b,c,d are positive integers and a+b+c+d = 99, and A = (-1)a + (-1)b + (-1)c + (-1)d then, the total possible number of values of A are

1) 99
2) 98
3) 3
4) 2