hellp doing maths sum
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answer is option d
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There are 9000000 seven-digit numbers in total. Of these, 5^7 = 78125 have odd digits only (1, 3, 5, 7, 9). This leaves 8921875 seven-digit numbers that have at least one even digit.
hope it helps u
There are 9000000 seven-digit numbers in total. Of these, 5^7 = 78125 have odd digits only (1, 3, 5, 7, 9). This leaves 8921875 seven-digit numbers that have at least one even digit.
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