TCS Company Numerical Ability Permutation and Combination

A person has 7 penny’s with him and 1 water melon is for 1p, 2chickoos for 1p, 3 grapes for 1p. He has three sons. How can he share the fruits equally?

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TCS Other Question

There is a water-cask with three different water-taps.

With the smallest tap, the water-cask can be filled in 30 minutes.
With the middle tap, the water-cask can be filled in 20 minutes.
With the largest tap, the water-cask can be emptied in 15 minutes.

The water- ask is one-fourth filled. Now each of the 3 taps is opened turn by turn for a minute each in the sequence, smallest, largest, middle, smallest, largest, middle, smallest, largest, middle.

In how much time would the water-cask be first filled?
There is a triangle and 3 ants on each vertex of the triangle. The 3 ants start to move randomly along the edges of the triangle. What is the probability that two ants will collide?