Questions on Number puzzle are very common in competitive exams and here in this section we will discuss few of them with answer. Do these type of Number puzzle questions. These will help you for your competitive exams. Try to solve the question mention below using your skills on math. You can also apply your learning skills of Shortcut Tricks.

We try to bring together all types of shortcut methods on Number puzzle for every topic here in this website. All you have to do is now to apply those shortcut tricks here to solve these Number puzzle problems. But you may not need any shortcut tricks to solve some of these questions.

Here we will discuss a question on Number puzzle. 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 do this problem then check the solution of this question with your answer. 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. Click on the Next/Previous link to navigate through other questions.

Let’s starts the Question Answer session. Today’s question is:

**Which number should replace the question mark ?**

**11 = 110**

** 10 = 90**

** 9 = 72**

** 8 = 56**

** 7 = 42**

** 6 = ?**

Scroll down below to know the answer of this question. You can take as much time as you need to answer the question. But always try to solve it as quickly as you can.

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

**11 x 10 = 110
10 x 9 = 90
9 x 8 = 72
8 x 7 = 56
7 x 6 = 42
6 x 5 = 30**

**Number 30 should be place in question mark.**

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