Answer: 831 or 833
Explanation:
Rounded to the nearest 10: 845 ≤ x < 855
Rounded to the nearest 100: 850 ≤ x < 950
The answer has to be between 845 ≤ x < 855 and 850 ≤ x < 950
850 ≤ x < 855
Odd numbers between 850 ≤ x < 855 = 831 or 833
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