Kuix x x
1. 5! - 4! = ...
2. 4!! = ...
1. 5! - 4! = ...
2. 4!! = ...
Jawaban:
1). 5! - 4!
= (5 × 4 × 3 × 2 × 1) - (4 × 3 × 2 × 1)
= 120 - 24
= 96
2). 4!!
= (4 × 2)
= 8
Diketahui :
5!
= 5 × 4 × 3 × 2 × 1
= 20 × 3 × 2 × 1
= 60 × 2 × 1
= 120 × 1
= 120
4!
= 4 × 3 × 2 × 1
= 12 × 2 × 1
= 24 × 1
= 24
Ditanya :
1. 5! - 4! = ...?
2. 4!! = ...?
Dijawab :
1. 5! - 4!
= (5.4.3.2.1) - (4.3.2.1)
= 120 - 24
= 96 √
2. 4!!
= 4 × 2
= 8 √
Keterangan :
→ hasil dari 5! - 4! adalah 96
→ hasil dari 4!! adalah 8