Home > Math Shortcuts > Brain Trigger #21 – Sample Number puzzle question

Brain Trigger #21 – Sample Number puzzle question

Almost every competitive exams have Number puzzle questions. Here we will discuss few of them. Questions like Number puzzle will help you to prepare for your competitive exams. Try to solve the question mention below using your skills on maths. Short cut tricks can also be used to solve these Number puzzle questions.

We try our best to get all type of short cut tricks to solve these problems and bring them together here in this website. Now you just need to apply those tricks to solve these questions. Without applying any short cut tricks, you can also solve these questions.

Now here we will give you a question on Number puzzle to solve. A question on Number puzzle is provided below, read the question very carefully and try to solve it by yourself. Answer of this question will be provided below. If you solve the question then check your answer with our solution. If you don’t know how to solve this then also check below.

Every page of this section is contain a question on Number puzzle with its detail explanation. Next/Previous link will help you to navigate through other questions.

Let’s begin question with answer session. Today’s question is:

What should be the number replaces in the question mark ?


To know the answer of this question please scroll down. You can take as much time as you want to solve the question. But always try to do it as faster as you can.



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Now answer of the above question will be discuss here. If you already done this by yourself then please check your answer with us. If you got an correct answer then very Well Done, but don’t worry if you are not able to answer the question correctly. Solution with explanation of the following question is provided below.

You can solve in this way …….
square of 3,4, 5 in the first row number minus with second row number that is square of 2 and the result is third row numbers.

1st row
3 x 3 = 9

4 x 4 = 16
5 x 5 = 25
2nd row
2 x 2 = 4
3rd row
9 – (2 x 2) = 5
16 – (2 x 2) = 12

25 – (2 x 2) = 21



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