We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

Do you know who was buried in John's tomb?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

The pound is not a finish.

We are sharing a few instructions below, which you have to use in any suitable order to modify the above sentence such that the end sentence is a scientific fact.

- Eliminate a letter and supplement another in its place.
- Take away one word.
- Remove one letter from one word.
- Get rid of two letters from one word.
- Swap a word with its antonym.

A man dies of old age on his 25 birthday. How is this possible?

What Time Should the last watch show in the below figure?