Number System · Question 21 · Medium
What is the remainder when 25 × 37 × 43 is divided by 9?
- 4
- 7
- 2
- 5
Answer and explanation
Answer: A. 4
Explanation: Remainders mod 9: 25 → 7, 37 → 1, 43 → 7. So the product leaves 7 × 1 × 7 = 49 → 49 mod 9 = 4.
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