What do you get if you add 2 to 100 four times?

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

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

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 a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

What number comes next in this sequence:
7 8 5 5 3 4 4 _

No matter how little or how much you use me, you change me every month. What am I?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Replace the question mark with the correct number in below Picture: