MBA Exam

Maximum no. of points of intersection of 6 circles and max no of points of intersection of 6 straight lineswhat is the difference between these two

1) 30,15
2) 15,30
3) 13,90
4) 66,9

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MBA Other Question

Two non-intersecting circles with radii ‘r’ units and ‘2r’ units have their centres at a distance of 2√3r units. Find the length of the direct common tangent to the circles.

1) 3r units
2) √13 r units
3) √11r units
4) √10r units
how many four digit positive integers that are divisible by 3 can be formed using digit 0 to 6, without any of the digit getting repeating..?