MBA Exam

A person has to climb 10 steps...He climbs in either a single step or 2 steps.In how many ways can he do it?

1) 28
2) 15
3) 89
4) 98

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MBA Other Question

ten bags contains 10 coins each.All the coins look alike but the coins in one bag weigh 1gm less than that in other bags. What is the least number of weighing using a spring balance needed to identify the bag containing 9gm coins?.....plz post the solution as soon as possible..

1) 1
2) 2
3) 3
4) 4
5) 5
In a certain class, the number of students who either do not study at home or do not attend classes is a third more than that of those who study at home or attend classes. Further, the number of students who do not study at home but attend classes is two fifths more than those who study at home but do not attend classes, while the number of student who study at home as well as attend classes is half that of those who neither study at home nor attend classes. If the total number of students in the class is 150, then find the number of students who study at home as well as attend classes.

1) 35
2) 25
3) 30
4) 45