Can you count the number of lines in the below picture?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Using Only Five 5's and any mathematical operator make sum as 37

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Why do we preferably have round manhole covers and not square ones?

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

What is the relationship between these matchstick pictures below?

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

What does this rebus picture identify?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?