12!/3!2!4!=1663200 how? – InterviewSolution

1.	12!/3!2!4!=1663200 how?
Answer» 12!/3!2!4!= 12×11×10×9×8×7×6×5×4!/3!2!4! = 12×11×10×9×8×7×6×5/3×2×1×2×1 =11×10×9×8×7×6×5 =1663200

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