How can a man go eight days without sleep?

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.

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

What is the largest number you can write with just 3 digits?

A man is shown a portrait painting. He looks closely, then tells, “Brothers and sisters have I none, but that man’s father is my father’s son!” Who is the man in the portrait?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

The Judge knows that Alamgir was killed by his girlfriend Jasline, but the judge is unsure whether to punish her. Why?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?