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1. যদি 7 × 6 = 2824, 2 × 3 = 812, হয় তবে 4 × 5 =?
- A. 2016
- B. 2016
- C. 2016
- D. 2016
Answer: Option B
Explanation:
এখানে,
7 × 4 = 28, 6 × 4 = 28, ∴ 7 × 6 = 2824
2 × 4 = 8, 3 × 4 = 12, ∴ 2 × 3 = 812
একইভাবে,
4 × 4 = 16, 5 × 4 = 20, ∴ 4 × 5 = 1620
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