If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

How many times can you subtract the number 5 from 25?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

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

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

Which point will the car reach to go out?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

Which Burger Is Different in below image?

During which month do people sleep the least?

The more of this there is, the less you see. What is it?