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)?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

There was a strange boy who was born before his father. How can this be possible?

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

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

Which is faster, Heat or Cold ? Explain.

I am lying and I always lie. Tell me whether I am lying or telling the truth.

What Does this text mean:

important=important

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?