Total number of 6-digit numbers in which all the odd digits and only odd digits appear, is
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7
5×5×5×5×5×5 =15625
1,3,5,7,9 these 5 digits comes in every place
1,3,5,7,9 these 5 digits comes in every place
Answered by
9
first we select the repeated digit than after arrange 6 digits where two of them are same.
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