C. 120 / 120
ExplanationStep 1: In factorial multiply all integers from 1 to that number. Step 2: 5! = 5×4×3×2×1 = 120. Step 3: Factorial is very useful in permutation questions.
Step 1: Factorial में 1 से उस number तक सभी integers multiply करते हैं। Step 2: 5! = 5×4×3×2×1 = 120। Step 3: Permutation questions में factorial बहुत काम आता है।
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