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

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

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.

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

If 1+9+8=1, what is 2+8+9?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?