How many 5-digit numbers can be formed withou | vedclass

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(C) $5$-digit number is formed by $5$ places: the ten-thousands,thousands,hundreds,tens,and units place.The ten-thousands place can be filled by any d

Vedclass · Accepted Answer

$90000$

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(C) $5$-digit number is formed by $5$ places: the ten-thousands,thousands,hundreds,tens,and units place.The ten-thousands place can be filled by any digit from $1$ to $9$ (since it cannot be $0$),which gives $9$ options.The remaining $4$ places (thousands,hundreds,tens,and units) can each be filled by any digit from $0$ to $9$,which gives $10$ options for each place.Total number of $5$-digit numbers $= 9 	imes 10 	imes 10 	imes 10 	imes 10 = 90000$.

How many $5$-digit numbers can be formed without any conditions?

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