I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Can you place three balls such that the equation shown in the picture holds true?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

What is the riddle which can be asked all day with a different correct answer each time.

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

From a pack of 52 cards, I placed 4 cards on the table.

I will give you 4 clues about the cards:

Clue 1: Card on left cannot be greater than the card on the right.
Clue 2: Difference between the 1st card and 3rd card is 8.
Clue 3: There is no card of an ace.
Clue 4: There are no face cards (queen, king, jacks).
Clue 5: Difference between the 2nd card and 4th card is 7.

Identify four cards?