8! × 7!!
77 × 25
22 + 11 – 10
peraturan sperti biasa
___jwbn grade 4 ato 5 BeA
nt : ni loh :-:"
Soal
PENYELESAIAN
- 8!
- 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1
- 56 × 30 × 12 × 2
- 56 × 30 × 24
- 1680 × 24
- 40320
—
- 7!!
- 7 × 5 × 3 × 1
- 35 × 3
- 105
—
8! × 7!!
40.320 × 105
4.233.600
_____
77 × 25
1925
_____
22 + 11 – 10
33 – 10
23
Nomor 1
8! × 7!!
= (8 × 7 × 6 × 5 × 4 × 3 × 2 × 1) × (7 × 5 × 3 × 1)
= (56 × 30 × 12 × 2) × (35 × 3)
= (1.680 × 24) × 105
= 40.320 × 105
= 4.233.600
Nomor 2
77 × 25
= 1.925
Nomor 3
22 + 11 – 10
= 33 – 10
= 23