What is next number in the pattern below:

131 517 192 123 ?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

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?

You can move only two matchsticks in the given picture. What is the highest number you can form by doing it?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

Can You Find the Missing Zero? A Number Puzzle that Will Trick Your Eyes

Readers with high attention to detail can identify the vampire in the picture. Can you?

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

Sharpest vision can find the lamp in the desert. Are you one of them? Test your observation skills now!

Riddle me this, Riddle me that,
What am I? I am made of wood, but you can't see me down?