Q. 8! – 6! Pake cara​

Jawaban:

8!-6!

=(8×7×6×5×4×3×2)-(6×5×4×3×2)

=(56×30×24)-(30×24)

=40.320-720

=39.600✔

Jwbn :

8!

= 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 56 × 6 × 5 × 4 × 3 × 2 × 1

= 336 × 5 × 4 × 3 × 2 × 1

= 1.680 × 4 × 3 × 2 × 1

= 6.720 × 3 × 2 × 1

= 20.160 × 2 × 1

= (20.160 + 20.160) × 1

= 40.320 × 1

= 40.320

6!

= 6 × 5 × 4 × 3 × 2 × 1

= 30 × 4 × 3 × 2 × 1

= 120 × 3 × 2 × 1

= 360 × 2 × 1

= (360 + 360) × 1

= 720 × 1

= 720

= 8! – 6!

= ( 8.7.6.5.4.3.2.1 ) – ( 6.5.4.3.2.1 )

= 40.320 – 720

= 39.600