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

How many triangles can you count in the figure given?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

You need to move three matchsticks to form three squares. Can you do it?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

What has hands, but can’t clap?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?