how mandy whole numbers are less than 1000 but contain no 8 but at least one 2

Question

owlfred · Answer

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anonymous · Answer

come on. you can figure that out!

nowhereman · Answer

How can one number 'contain' another?

watchmath · Answer

There are 999 whole numbers that are less than 1000 (from 1 up to 999)
Since we want the numbers to be greater than 1 we need to remove  the 1 from the set and also we remove the 8 because we don't want that number. So after removing two numbers we have 999-2=997 numbers.

anonymous · Answer

think you might have missed this one watchmath.  i read it to say "how many three digit numbers are there where none of the digits are 8 and at least one is 2"

for example 811 is out as is 345 but 231 is in

anonymous · Answer

or it could mean how many whole numbers are divisible by 2 but not 8

nowhereman · Answer

Or it could mean, all numbers greater than 8 and smaller than 2. Because set-theoretically a natural number is the set of all it's predecessors.