If you are looking for the math trick of missing digit then you are at right place because here we have shared with you the Missing Digit Math Trick in Urdu/English
The Missing Digit Math Trick in English
The Missing Digit Trick
Here it is
Go and hide in a cupboard or cover your eyes in some way so that you can’t see what your friend is writing.
Ask a friend to secretly write down any number (At least four digits long e.g 78341)
Ask the friend to add up the digits e.g 7+8+3+4+1=23 and subtract the number from first number i.e 78341-23= 78318
Your friend then crosses out one digit from the answer ( It cant be any digit except zero) e.g 7 X 318.
Your friend then reads out what digits are left e.g 7-3-1-8
Even though you have not seen the number you can say what missing digit is! Eight
The secret:
The great trick relies on the power of 9
After your friend has added up the digits and subtracted them the answer will always be dividable by 9.
If a number which divides on 9 when you add the digits of that number They will also divide by 9 .
If you check example 7+8+3+1+8=27 which does divide by nine
When your friend crosses a digit out the digits that are left. You add them up .
In the example We had 7+3+1+8=19
All you do now is see what you have to add to your answer to get the next number that divides by nine!
The next number to divide by 9 after 19 is 27.
So you need to add one eight.
This is the number that was crossed out.
The Missing Digit Math Trick in Urdu
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