Why is the Hole below a Lock?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

Which Burger Is Different in below image?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

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

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. One time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. Can you tell me how that was possible?”

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

There is something which you can be arrested for attempting but not for successfully completing.