Here in this section we will discuss some question and answer on Number puzzle which are very common in competitive exams. These types of Number puzzle questions will help you to prepare for your exam. Try to Solve these questions with your math skills. Apply your skills on shortcut tricks to solve these Number puzzle question.

We try to bring together all types of shortcut methods on Number puzzle for every topic here in this website. Now you just need to apply those tricks to solve these questions. Without applying any shortcut tricks, you can also solve these questions.

Now here we will give you a question on Number puzzle to solve. First of all you need to read the question very carefully and try to solve it by yourself. We will provide the answer of this question below. If you solve the problem then check your answer with us. Don’t know how to do it? Check below for the solution of this question.

Every page of this section is contain a question on Number puzzle with its detail explanation. By cliking on Next/Previous link you can 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 ?**

Scroll down below to know the answer of this question. Take as much time as you want to get the answer of this question. But always try to solve it as quickly as you can.

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Here starts the solution of the previous problem. If you already try the problem and got an solution then check your answer with our solution. Well Done if you got an correct answer of the question, but if you are unable to answer the question correctly the don’t worry. Here is the answer of the question with explanation.

**You may solve in this way……**

4, 9, 19, 39, 79, ?….

4×2+1=9

9×2+1=19

19×2+1=39

39×2+1=79

79×2+1=159

79×2+1=159

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