MBA Exam

First of all, this is not a question.lets talk about spheres.Surface Area of Sphere of sphere = 4 . pi. Sqr(r)When a sphere is cut,into two halves, Surface Area of all pieces = 6 . pi. Sqr(r) and that of each piece is 3. pi. Sqr(r)into four parts, Surface Area of all pieces = 8 . pi. Sqr(r) and that of each piece is 2. pi. Sqr(r)into eight parts, Surface Area of all pieces = 10 . pi. Sqr(r) and that of each piece is (5/4). pi. Sqr(r)Someone please verify

1) Wrong.
2) Right
3) Not sure
4) Thanks

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There are 140 students in a school. The number of students who play Cricket, Football and Hockey are 50, 80 and 70 respectively. The ratio of the number of students who play more than one of the three sports to the number of students who play all the three sports is 3 : 2. If each student of the school plays at least one of the three sports, then how many students play exactly two of the three sports?(a) 12 (b) 14 (c) 16 (d) 20 (e) 24

1) a
2) b
3) c
4) d
5) e
A boat is to be manned by 8 men, of whom, one cannot row on the boat side and two cannot row on the stroke side. In how many ways can the crew be arranged?

1) 2880
2) 1440
3) 4320
4) 5670
5) 5760