Find the missing letter in the last circle logically in the given below picture.

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

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

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

These types of puzzles are known as charades. What you have to do is find two words that are referred to in the first stanza and the second stanza and put them together to form the third word in the third stanza.

Just for example, if my first refers to 'off' and my second refers to 'ice', then my whole will be office.

My first is present - future's past -
A time in which your lot is cast.

My second is my first of space
Defining people's present place.

My whole describes a lack of site -
A place without length, breadth, or height.

What does it mean?