In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

What does this mean?

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You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

These types of puzzles are known as charades. What you have to do is to 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 the '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's a single-digit number with no value?

How do you go from 98 to 720 using just one letter?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.