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

Find out the number of circles in the given picture having Illusion

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Prove that the below maths equation is true.

8 + 8 = 91

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

What runs around the whole yard without moving?

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

Can you make a six-letter word using the letters N, A and B ?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

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