1). 9! + 8!
2). 2! × 3!
3). 7! – 4!
Nt : liatin ampe puyeng yak,wk wk
Q. Faktorial
Jawaban :
1. 403.200
2. 12
3. 5.016
Cara :
1. 9! + 8!
- 9! = 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
- 8! = 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
= 9! + 8!
= (9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1) + (8 x 7 x 6 x 5 x 4 x 3 x 2 x 1)
= 362.880 + 40.320
= 403.200
2. 2! x 3!
- 2! = 2 x 1
- 3! = 3 x 2 x 1
= 2! x 3!
= (2 x 1) x (3 x 2 x 1)
= 2 x 6
= 12
3. 7! – 4!
- 7! = 7 x 6 x 5 x 4 x 3 x 2 x 1
- 4! = 4 x 3 x 2 x 1
= 7! – 4!
= (7 x 6 x 5 x 4 x 3 x 2 x 1) – (4 x 3 x 2 x 1)
= 5.040 – 24
= 5.016
9! + 8!
= 9×8×7×6×5×4×3×2 + 8×7×6×5×4×3×2
= 362.880 + 40.320
= 403.200
2!×3!
= 2 × 3×2
= 2×6
= 12
7!-4!
= 7×6×5×4×3×2-4×3×2
= 5.040 – 24
= 5.016