What should be subtracted from the greatest 7 digit number to get 6543210
9999999 - x = 6543210
Class 5th
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To find out what should be subtracted from the greatest 7-digit number (9999999) to get 6543210, you simply subtract 6543210 from 9999999.
So the calculation would be:
9999999 - 6543210 = 3456789
Therefore, 3456789 should be subtracted from the greatest 7-digit number (9999999) to get 6543210.