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Here is an interesting trick that you can do it much faster than the calculator. You can perform this simple math trick with your friends, family members to show how far you are skillful in mathematical calculations.

Follow the steps below to learn this simple trick.

**Step 1:** Ask your friend to write a three digit number.

Lets assume a number, 539

**Step 2:** Now ask your friend to multiply the number with 7, 11 and 13.

**Step 3:** Before your friend says the result, you can reveal it much faster.

The answer is **539539**

**Note:** When you multiply any three digit number with 7, 11 and 13, result will be always twice the original number.

For example, **786** x 7 x 11 x 13 = **786786**

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Daily Maths Topic Today - 7 x 11 x 13 Multiplication Trick.