Correct option is A
Given:
Number - 684912753
Solution:
Sorted Number: 123456789
Compare the positions of each digit in the original number with their positions in the sorted number:
6: Original position 1 New position 6
8: Original position 2 New position 8
4: Original position 3 New position 4
9: Original position 4 New position 9
1: Original position 5New position 1
2: Original position 6 New position 2
7: Original position 7 New position 7 (Unchanged)
5: Original position 8 New position 5
3: Original position 9 New position 3
The only one digits 7 in the same positions in both the original and sorted numbers.
Thus, the correct answer is (a) 1
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