Math, asked by Abhisrivastava6035, 1 year ago

How many number between 100and 1000 can be formed with digit 5,6,7,8,9, if the repetition is not allowed

Answers

Answered by sap000006

We have 900 3-digit numbers between 100 and 1000. So # of numbers with atleast 1 7- digit = total - no 7 digits = 900 - 8*9*9 = 900- 648=252 ... Maybe something you can think about

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