10+10 and 11+11 can give you the same answer.

Explain how?

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

Replace the question mark with the correct number in below Picture:

What is the word or phrase below?
R | E | A | D

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Vin Diesel is pulling a theft and has planned to run away with all the cash kept in the safe. But the only way to open the safe is the 13 character password. He has a set of five clues given to him by a trustworthy source.

Exactly two of the below statements are false.
The password is contained within this sentence.
The password is not in this hint.
The password is within only one of these statements.
At least one of the above statements is a lie.

When can we add 2 to 11 and get 1 as the correct answer?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits