Question

Q.
= 8!! × 4!!
= 6!!
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Answer 1

8!! × 4!!= (8 × (8-2) × (8-4) × (8-6)) × (4 × (4-2))= (8×6×4×2) × (4×2)= (48×8) × 8= 384 × 8= 3.0726!!= (6 × (6-2) × (6-4))= (6×4×2)= (24×2)= 48