D. 24 / 24
ExplanationStep 1: In factorial multiply the number down to 1. Step 2: 4! = 4×3×2×1 = 24. Step 3: Factorial notation is very useful in permutations.
Step 1: Factorial में number से 1 तक multiplication करते हैं। Step 2: 4! = 4×3×2×1 = 24। Step 3: Factorial notation permutation में बहुत useful है।
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