MBA Exam

From a vessel containing 160ltr of milk x ltr are drained out and replaced by water. Then again x ltr of milk-water solution is drained out and replaced by water. Finally 90ltr of milk is left in the vessel. Find the value of x.

1) 30
2) 40
3) 36
4) 35

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MBA Other Question
Four triangular gardening plots form a square as in the figure shown. A gardener will plant flowers so that each plot contains one kind of flower, and flowers in plots which share a common edge are different. How many choices does the gardener have if the flowers can be roses, carnations, daisies, lillies, or tulips?

1) 260
2) 280
3) 890
4) 900
 A teacher asked her students to think of a natural no which was a perfect square and convert it to a base pf any natural number not more than 9.She observed that even though no 2 students converted to the same base,all the students ended up getting the same result of 12321.Find the max number of students in the class

1) 4
2) 5
3) 6
4) 7