1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

The centre of the third figure is empty. What digit should fit inside?

Replace the question mark with the correct number in the below-given picture?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

What four weights can be used to balance from 1 to 30 pounds?

With the help clues provided in the image, can you find the 5 digit key?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?