যদি 2×3=812 ,4×5=1620 হয় তবে 6×7=?
Solution
Correct Answer: Option A
2×4 = 8 ⌠ 4×4 = 16 ⌠
3×4 = 12 ⌡->812; 5×4 = 20 ⌡->1620
6×4 = 24 ⌠
7×4 = 28 ⌡->2428
6×7 = 2428
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