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Question Number 102975 by Rio Michael last updated on 12/Jul/20

A student can recall 6 digits of a 9 digit number.  In how many ways can he get the complete number?

$$\mathrm{A}\:\mathrm{student}\:\mathrm{can}\:\mathrm{recall}\:\mathrm{6}\:\mathrm{digits}\:\mathrm{of}\:\mathrm{a}\:\mathrm{9}\:\mathrm{digit}\:\mathrm{number}. \\ $$$$\mathrm{In}\:\mathrm{how}\:\mathrm{many}\:\mathrm{ways}\:\mathrm{can}\:\mathrm{he}\:\mathrm{get}\:\mathrm{the}\:\mathrm{complete}\:\mathrm{number}? \\ $$

Commented by Rio Michael last updated on 12/Jul/20

yes sir am sure.

$$\mathrm{yes}\:\mathrm{sir}\:\mathrm{am}\:\mathrm{sure}. \\ $$

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