How many 4 digit numbers, in all are there? - Vidyadip

MCQ

How many $4$ digit numbers, in all are there$?$

A
$9999$
B
$9990$
✓
$9000$
D
$8999$

✓

Answer

Correct option: C.

$9000$

$\Rightarrow $ The smallest $4 −$ digit number $= 1000.$
$\Rightarrow $ The greatest $4 −$ digit number $= 9999.$
$\Rightarrow $ Total $4 −$ digit numbers $= (9999 - 1000) + 1$
$= 8999 + 1$
$= 9000$
So, we say that we have $9000$ four - digit numbers.

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