Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

What goes up but never comes down?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

In the image below, can you find the value of an angle(y)

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?