Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

What has one letter and starts with an E?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Solve the puzzle by telling what does below picture means.

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?