6! + 8! + 9! - 3!! + 8!!!
✎MemakaiCara ☑︎![]()
✎MemakaiCara ☑︎
6! = (6 × 5 × 4 × 3 × 2 × 1)
= (30 × 12 × 2)
= (360 × 2)
= 720
•
8! = (8 × 7 × 6 × 5 × 4 × 3 × 2 × 1)
= (56 × 30 × 12 × 2)
= (1680 × 24)
= 40.320
•
9! = (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1)
= (72 × 42 × 20 × 6)
= (3024 × 120)
= 362.880
•
3!! = (3 × (3 - 2))
= (3 × 1)
= 3
•
8!!! = (8 × (8 - 3) × (5 - 3) × 1)
= (8 × 5 × 2 × 1)
= (40 × 2)
= 80
•
•
6! + 8! + 9! - 3!! + 8!!!
= 720 + 40.320 - 362.880 - 3 + 80
= 41.040 - 362.880 - 3 + 80
= -321.840 - 3 + 80
= -321.843 + 80
= -321.763
