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Exam details
Sum of digits divisible by 3. E.g., 4521 → 4+5+2+1=12 → divisible.
Last two digits divisible by 4. E.g., 1532 → 32 ÷ 4 = 8.
Even AND divisible by 3.
Last three digits divisible by 8.
Sum of digits divisible by 9.