Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not-rounded numerals equals 24.

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

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

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

What has hands, but can’t clap?

A red house is made out of red bricks. A yellow house is made out of yellow bricks. And, a blue house is made out of blue bricks. So, what is a greenhouse made of?

Can you find the dog hidden in a group of pandas?

What country can make you shiver?

What can you see in the middle of March and April that you can never see in any other month?

What does this mathematical rebus means ?