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

What is the next number?

77, 49, 36, 18 ?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

By moving just one matchstick, you need to make the below statement true. Can you do it?

Can you place six X (crosses) in below board without making three in a row in any way ?