8! - 7! ::::NT : sesad di sawah dongg

8! – 7! ::::NT : sesad di sawah dongg

$pink{boxed{ red{P} orange{e} green{r} blue{t} purple{a} pink{n} red{y} orange{a} green{a} blue{n} purple{ : }}}$

> 8! – 7! = …

$pink{boxed{ red{J} orange{a} green{w} blue{a} purple{b} pink{a} red{n} orange{:}}}$

• 8! – 7!

= (8 × 7 × 6 × 5 × 4 × 3 × 2 × 1) – (7 × 6 × 5 × 4 × 3 × 2 × 1)

= 40.320 – 5.040

= 35.280 ✔

___________________________

• 8! = 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

8 × 7 = 56

56 × 6 = 336

336 × 5 = 1.680

1.680 × 4 = 6.720

6.720 × 3 = 20.160

20.160 × 2 = 40.320

40.320 × 1 = 40.320

• 7! = 7 × 6 × 5 × 4 × 3 × 2 × 1

7 × 6 = 42

42 × 5 = 210

210 × 4 = 840

840 × 3 = 2.520

2.520 × 2 = 5.040

5.040 × 1 = 5.040

_______________________

⇒ 8! – 7!

⇒ 40.320 – 5040

⇒ 35.280 ✔

Mapel : Matematika

Kelas : 12

Materi : Bab 7 – Kaidah pencacahan

Kata kunci : Faktorial dan Kaidah pencacahan.

Kode soal: 2

Kode Kategorisasi: 12.2.7

~CMIIW

8!- 7! =

8! = 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 40.320

7! = 7 × 6 × 5 × 4 × 3 × 2 × 1 = 5.040

40.320 – 5.040 =

= 35.280