If 21x = 79x, what is the value of x?

Why do you find that most of the buildings are deprived of the 13th floor?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

Can you count the number of triangles in the given figure?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Can you name some countries which do not have the alphabet 'A' in them?

What is the word or phrase below?
R | E | A | D

Can you place six X (crosses) in below board without making three in a row in any way ?