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To test divisibility by 4, look at only the last how many digits?
ASix
BTen
CFour
DTwo
Answer & Solution
Correct answer: D. Two
1. The rest of the number can be ignored.
2. A short tail settles it.
3. Look at only the last two digits.
_Source: OpenStax, Contemporary Mathematics, Ch 3 'Real Number Systems and Number Theory'_
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