Q. 400 pertanyaan

Jawaban:

7! + 4! =

(7×6×5×4×3×2×1) + (4×3×2×1)

(42×20×6) + (12×2)

(840×6) + 24

5040 + 24

= 5.064

6! + 5! =

(6×5×4×3×2) + (5×4×3×2)

(30×24) + (20×6)

720 + 120

= 840

5.064

840

Penjelasan dengan langkah-langkah:

Soal :

7! + 4! = 5.064

6! + 5! = 840

Penyelesaian :

7! + 4!

= (7 × 6 × 5 × 4 × 3 × 2 × 1) + (4 × 3 × 2 × 1)

=  (42 × 5 × 4 × 3 × 2 × 1) + (12 × 2 × 1)

=  (210 × 4 × 3 × 2 × 1) + (24 × 1)

=  (840 × 3 × 2 × 1) + (24)

= (2.520 × 2 × 1) + (24)

= (5.040 × 1) + (120)

= 5.040 + 24

= 5.064

6! + 5!

= (6 × 5 × 4 × 3 × 2 × 1) +  (5 × 4 × 3 × 2 × 1)

= (30 × 4 × 3 × 2 × 1) +  (20 × 3 × 2 × 1)

= (120 × 3 × 2 × 1) +  (60 × 2 × 1)

= (360 × 2 × 1) +  (120 × 1)

= (720 × 1) +  (120)

= 720 + 120

= 840

Frzz_