What is the next shape from answers A, B, C, and D figure?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

I add 5 to 9 and get 2. The answer is correct, so what am I?

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

Count the number of triangles in the picture below:

Rectify the following equality 101 - 102 = 1 by moving just one digit.