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.

John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Identify the 10 differences between the two given pictures.

Can you solve below mathematical equation?

2^1234 - 2^1233

The more of this there is, the less you see. What is it?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?