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Answered

How many whole numbers less than 100000 contain all digits 0, 2, 4, 6, 8?

Answer :

(100,000 - 10,000) + 1 count for ( from 10,000 means 10,000 is included in it ) + 1 count for ( to 100,000 means 100,000 is also included in it )

= 90,000 + 1 + 1

= 90,002

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