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)?

The dirtier I get, the whiter I look. Who am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Which Burger Is Different in below image?

Can you count the number of quadrilaterals in the picture below?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

500 women soldiers are arranged in an array of ten rows and fifty columns in accordance with their respective heights. Now, the tallest woman from each row is asked to move out in the front. From them, the shortest one is labelled as Alpha. They are then asked to resume their original position.

Now, the shortest woman in each column is asked to come out in front. The tallest among them is labelled as Beta.

Can you find out if Alpha will be taller or Beta?

Find the value of "?" in the ball picture Riddle below:

When my father was 31 I was 8. Now he is twice as old as me. How old am I?