A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

How many triangles are there on the puzzle below?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

Before Mount Everest was discovered, what was the highest mountain in the world?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Find the missing number in the sequence below:

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