7! + 4! - 99
pakai cara
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pakai cara
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Jawaban:
Kerjakan dari kiri √
Cara √
7!
[tex]7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 \\ 42 \times 5 \times 4 \times 3 \times 2 \times 1 \\ 210 \times 4 \times 3 \times 2 \times 1 \\ 840 \times 3 \times 2 \times 1 \\ 2.520 \times 2 \times 1 \\ 5.040 \times 1 \\ 5.040[/tex]
4!
[tex]4 \times 3 \times 2 \times 1 \\ 12 \times 2 \times 1 \\ 24 \times 1 \\ 24[/tex]
[tex]5.040 + 24 - 99 \\ 5.064 - 99 \\ 4.965[/tex]
7! + 4! - 99
= (7 × 6 × 5 × 4!) + (4 × 3 × 2 × 1) - 99
= (42 × 5 × 4!) + (12 × 2 × 1) - 99
= (210 × 4!) + (24 × 1) - 99
= (210 × 24) + 24 - 99
= 5.040 + 24 - 99
= 5.064 - 99
= 4.965
Jadi :
7! + 4! - 99 = 4.965
