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Question
How many numbers can be made with digits 0, 7, 8 which are greater than 0 and less than a million ?(CAT 2002)
How many numbers can be made with digits 0, 7, 8 which are greater than 0 and less than a million ?(CAT 2002)
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Solution
The correct option is D 728
Option (d)
Since we are looking for numbers < a million, we can represent all the numbers in this range as “abcdef” . each
of the digits can be selected in 3 ways.
Total possible cases = 36 -1 = 728. We subtract one case where each of “abcdef” take 0.
Option (d)
Since we are looking for numbers < a million, we can represent all the numbers in this range as “abcdef” . each
of the digits can be selected in 3 ways.
Total possible cases = 36 -1 = 728. We subtract one case where each of “abcdef” take 0.
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