How many digits are there brtween 100and 1000 whose digits are even?
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Answered by
4
648
This range gives all 3 digit nos.
_ _ _
1st place can be filled by 9 digits- 1–9 excluding zero as 0 on first place would not form a 3 digit no.
2nd place can be filled by 9 digits- 0–9 not including the 1st no.
3rd place can be filled by 8 digits- 0–9 not including he 1st 2 nos.
Therefore answer is 9*9*8= 648.
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Answered by
0
answer will be 648
This range gives all 3 digit nos.
_______________________________
1st place can be filled by 9 digits- 1–9 excluding zero as 0 on first place would not form a 3 digit no.
2nd place can be filled by 9 digits- 0–9 not including the 1st no.
3rd place can be filled by 8 digits- 0–9 not including he 1st 2 nos.
Therefore answer is 9*9*8= 648.
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