It's an interesting riddle  which will force you to think outside the box . Can you solve it? Most people will think the answer is 9 but you're wrong... Solution is given below So 10 fish are in a tank  2 drown  :  Well think carefully fish can't drown .      4 swim away  :  Fish can't go anywhere as they are in the tank (fixed space).   1 die : Dead fish will be floating in the water.   As question only asked how many fish are left therefore dead fish will be considered in the counting.                 Ans: 10
First step in the world of interesting maths problems . Let's check whether these questions will screw your mind or not!!