In every BCS, Bank Jobs, admission tests or other competitive examinations some questions regarding "pass and fail" are seen.

Students and participants are confused to solve this type of mathematical problems within short time correctly.

But if they have some techniques they can easily solve it within 15 seconds without using calculator.

Some techniques are given today.

You will be given very short time to solve any mathematical problems in job and other competitive examinations.

Even sometimes you will not be allowed to use calculators in this exam hall.

Some interesting techniques are to be used in this situation. These will help you to solve the problems within very short period of time.