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Here is an interesting trick to find the missing number. Follow the steps below to learn this simple trick.

**Step 1:** Let your friend to write down 4 to 5 digit numbers.

For example, **39861**

**Step 2:** Ask your friend to sum up the digits.

**3 + 9 + 8 + 6 + 1 = 27**

**Step 3:** Now ask him/her to subtract the step 2 result from the main value

**39861 – 27 = 39834**

**Step 4:** Ask you friend to leave one digit and say all other digit from the result.

Let us keep that he left 8 and says the remaining number **3 9 x 3 4** to you.

**Step 5:** You can find the left out digit with the simple trick

Just add up all the digits given by your friend

**3 + 9 + 3 + 4 = 19 = 1 + 9 = 10 = 1+0 = 1**

**Note: How it works. Any number subtracted from the sum of its digits will be a multiple of Nine. That's the magic of number nine.**

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Daily Maths Topic Today - finding out the missing digits.