If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

John was a very careless driver, so his owner Jacob gave him an offer that he will get an incentive of Rs.30 for every bottle box he delivered without breaking it and he will be charged Rs.90 for every bottle box he broke. Jacob gave John 100 bottles-box to deliver. After delivery, Jacob paid John Rs.2400. How many bottles-box did John break?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

How many triangles are there on the puzzle below?

Using Only Five 5's and any mathematical operator make sum as 37

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

What does this mathematical rebus means ?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?