Math, asked by sathvik2231, 1 year ago

How many numbers are there between 1000 & 10000 in which all digits are distinct?

Answers

Answered by GauravGumber

6

= number of 4 digit numbers started with 1 without repetition - 1 (which is 1009 itself)
=9*9*8*7-1=4536-1=4535

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