صحيحة, 40=8×5, 1=1×1, 12=3×4, 25=5×5, 30=5×6, 36=6×6, غير صحيحة, 46=8×5, 2=1×1, 20=3×4, 35=5×5, 39=5×6, 34=6×6

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