Question

This is an equation you have to solve: ( ) + ( ) + ( ) + ( ) + ( ) = 30. The following are the numbers that you can use to fill in the brackets: 1, 3, 5, 7, 9, 11, 13 and 15. You can repeat the numbers if required. The resulting sum should be 30 only.

This is a tricky math question that can take a lot of time if you are not prepared well. The objective of asking this question is to test your thinking ability and aptitude.

Answer 1

In the above question, there is no mention if you can use mathematical signs or not. So, here we shall use the plus and minus mathematical signs in the brackets to solve this equation. This is the only possible way to solve this. This would be solved as follows: (15 - 9) + (13 - 7) + (7 - 1) + (9 - 1) + (13 - 9). When you solve inside the brackets, you will get the following equation 6 + 6 + 6 + 8 + 4 = 30

After adding all these numbers, you will get 30 which is the required sum.