Before Mount Everest was discovered, what was the highest mountain in the world?

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

You have three buckets with a capacity of 4 litres, 8 litres and 10 litres and you have a large tank of water. Now you have to measure 3 litres of water precisely using those buckets. How will you do it?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

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Like you see, some letters have gone missing from these words that contain the IE pair at some or the other place. The letters that will be used to fill the blanks are given below. Use them and form meaningful words. Can you do that?

A, C, D, F, H, K, L, M, N, N, O, R, R, S, S, S, T, T, Y and Y.

Prove that the below maths equation is true.

8 + 8 = 91

There is something which you can be arrested for attempting but not for successfully completing.

Why do we preferably have round manhole covers and not square ones?

Can you find out the remainder when 3^300 is divided by 5?

Move three sticks of the spiral below to form a square.