What has many keys but can’t open a single lock?
Can you spot the hidden clock in this family photo? Only the most eagle-eyed will find it!
When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?
I have a clock(12-hour format) and both the needles of the clock overlap at 12:00. After how much time, they will overlap again?
I am white when I am dirty, and black when I am clean. What am I?
I make two people out of one. What am I?
What jumps when it walks and sits when it stands?
There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?
Give it food and it will live; give it water and it will die.
A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?
If you say my name, I will no longer exist. What am I?
The phrase “thinking outside the box” was popularised from the solution to a topographical puzzle involving 9 dots in a box shape.