how many three digits number can be formed using digits 0,2,3,5,6,8,9 with no digits is repeated in each of the following ? (a) there is no restrictions (b) number must be multiply of 5. (c) the number is greater than 600. (d) even number is less than 400.
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Answer:
odd) greater than 600=950
even less than 400= 260
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Here is the answer to part a and b
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