CBSE Class 11-science Answered
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Asked by Swarnalakshmi Murugan | 04 Sep, 2011, 08:13: PM
Expert Answer
Total number of digits are: 10 (0,1,2,3,4,5,6,7,8,9)
Any number between 30,000 to 80,000 must be of 5 digits.
Also for being odd the unit place is either 1, 3, 5, 7, 9
Now If the number start with 3 or 5 or 7 or 9:
So the number of odd numbers with no digit repeated are = 4*8*7*6*3 = 4032
If the number start with 4 or 6:
The number of odd numbers with no digit repeated are = 2*8*7*6*5 = 3360
Hence the total number of odd numbers with no digit repeated are = 4032 + 3360 = 7392
Answered by | 09 Sep, 2011, 10:04: AM
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