MBA Exam

10 straight lines, no two of which are parallel and no three of which pass through any common point, are drawn on a plane. The total number of regions (including finite and infinite regions) into which the plane would be divided by the lines is(a) 56(b) 255(c) 1024(d) Not unique

1) 56
2) 255
3) 1024
4) None of the above

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MBA Other Question
A number is divided by 7,remainder is x. then divided by 19, leaves remainder 2x & when divided by 39, gives remainder 3x. if x=4,then find least possible such number?

N persons stand on the circumference of a circle at distinct points. Each possible pair of persons, not standing next to each other, sings a two-minute song one pair after the other. If the total time taken for singing is 28 minutes, what is N?

1) 1. 5
2) 2. 7
3) 3. 9
4) 4. None of the above​