soal ada di foto
_
req? Boleh
Penjelasan dengan langkah-langkah:
- 7! - 6!
= ( 7 × 6 × 5 × 4 × 3 × 2 × 1 ) - ( 6 × 5 × 4 × 3 × 2 × 1 )
= ( 42 × 5 × 4 × 3 × 2 × 1 ) - ( 30 × 4 × 3 × 2 × 1 )
= ( 210 × 4 × 3 × 2 × 1 ) - ( 120 × 3 × 2 × 1 )
= ( 840 × 3 × 2 × 1 ) - ( 360 × 2 × 1 )
= ( 2.520 × 2 × 1 ) - ( 720 × 1 )
= ( 5.040 × 1 ) - 720
= 5.040 - 720
= 4.320
___________________________
- 7! + 5!
= ( 7 × 6 × 5 × 4 × 3 × 2 × 1 ) + ( 5 × 4 × 3 × 2 × 1 )
= ( 42 × 5 × 4 × 3 × 2 × 1 ) + ( 20 × 3 × 2 × 1 )
= ( 210 × 4 × 3 × 2 × 1 ) + ( 60 × 2 × 1 )
= ( 840 × 3 × 2 × 1 ) + ( 120 × 1 )
= ( 2.520 × 2 × 1 ) + 120
= ( 5.040 × 1 ) + 120
= 5.040 - 120
= 5.160
1. 7!
7 × 6 × 5 × 4 × 3 × 2 × 1
7 × 6 × 5 × 4 × 3 × 2
7 × 6 × 5 × 4 × 6
7 × 6 × 5 × 24
7 × 6 × 120
7 × 720
= 5.040
6!
6 × 5 × 4 × 3 × 2 × 1
6 × 5 × 4 × 3 × 2
6 × 5 × 4 × 6
6 × 5 × 24
6 × 120
= 720
5.040 - 720
= 4.320
2. 7!
7 × 6 × 5 × 4 × 3 × 2 × 1
7 × 6 × 5 × 4 × 3 × 2
7 × 6 × 5 × 4 × 6
7 × 6 × 5 × 24
7 × 6 × 120
7 × 720
= 5.040
5!
5 × 4 × 3 × 2 × 1
5 × 4 × 3 × 2
5 × 4 × 6
5 × 24
= 120
5.040 + 120
= 5.160
