Answer :
Using the concept of subtraction, the list of one digit numbers which can be subtracted form 74 without regrouping are 0, 1, 2, 3, and 4.
To avoid regrouping, the value which would be subtracted, should not be greater than the unit digit of the value (74)
The unit digit of 74 would be 4
Hence, unit digits not greater than 4 are ;
- 4, 3, 2, 1, 0
Hence, the required digit are (0, 1, 2, 3, 4)
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