Math, asked by chishtiaqlodhi, 1 year ago

Mobile no of a telecom company begin with digits 932 and do not end on 9. How many phone number can it provide at most?

Answers

Answered by eduatulrajp3br2d
7

932 =3 numbers

left = 7 numbers

total combination for 7 number = 9999999

if we remove no ending with 9

then 11×10 =110

9999999 -110 =9999889

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