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 solve this picture maths equation?

Can you count the number of squares in the figure below?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Identify the hidden meaning behind this picture?

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?

Complete the table series riddle by finding the number that can replace "??".

Which number should replace the question mark?