Exam Company Numerical Ability Averages

Within a rectangular garden10m wide and 20 m long, we wish to pave a walk around the boarders of uniform width so as to leave an area of 96 m^2 for flowers. How wide should the walk be?

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Exam Other Question

3-1/2 log3(9) is


Op 1: 3
Op 2: 1/3
Op 3: 2/3
Op 4: none of these
There are 9 balls and 3 bags..How many ways to select at least 2 balls in each bags ?