Question

How many numbers are there in all with 4 digits?​with explanations

Answer 1

Hola dued...

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Well to simplify it ,

lets consider the Number of places and lets try to figure out what are the possible numbers that can be assigned in each place to make a valid 4 digit number.

°°°°So the total number of 4 digits with no repeat would be 9*9*8*7 = 4536 numbers.

Hope it will help you..

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