What begins with T, ends with T, and has T in it?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

I can be cracked, made, told, and played. What am I?

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

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Can you move 2 matchsticks to form four equal sized squares.

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

What is wrong in the below Picture?