Matematika Q.


1.) 14!! = ...

2.) 13!! = ...

3.) 12!! = ...

4.) 11!! = ...​

Q.


1.) 14!! = ...

2.) 13!! = ...

3.) 12!! = ...

4.) 11!! = ...​

Diketahui :

Faktorial

1.) 14!!

2.) 13!!

3.) 12!!

4.) 11!!

Ditanya :

Hasil dari faktorial tersebut ...?

Dijawab :

1.) 14!!

= 14 × 12 × 10 × 8 × 6 × 4 × 2

= 168 × 10 × 8 × 6 × 4 × 2

= 1.680 × 8 × 6 × 4 × 2

= 13.440 × 6 × 4 × 2

= 80.640 × 4 × 2

= 322.560 × 2

= 645.120

2.) 13!!

= 13 × 11 × 9 × 7 × 5 × 3 × 1

= 143 × 9 × 7 × 5 × 3 × 1

= 1.287 × 5 × 3 × 1

= 45.045 × 3 × 1

= 135.135

3.) 12!!

= 12 × 10 × 8 × 6 × 4 × 2

= 120 × 8 × 6 × 4 × 2

= 960 × 6 × 4 × 2

= 5.760 × 4 × 2

= 23.040 × 2

= 23.040 + 23.040

= 46.080

4.) 11!!

= 11 × 9 × 7 × 5 × 3 × 1

= 99 × 7 × 5 × 3 × 1

= 693 × 5 × 3 × 1

= 3.465 × 3 × 1

= 10.395 × 1

= 10.395

Keterangan :

hasil dari 14!! adalah 645.120

→ hasil dari 13!! adalah 135.135

→ hasil dari 12!! adalah 46.080

→ hasil dari 11!! adalah 10.395

semoga membantu

Jawaban:

───────────

1.) 14!! = 645.120

───────────

2.) 13!! = 135.135

───────────

3.) 12!! = 46.080

───────────

4.) 11!! = 10.395

───────────

PEMBAHASAN

1.) 14!!

= 14 × 12 × 10 × 8 × 6 × 4 × 2

= 168 × 80 × 48

= 13.440 × 48

= 645.120

2.) 13!!

= 13 × 11 × 9 × 7 × 5 × 3 × 1

= 143 × 63 × 15

= 9.009 × 15

= 135.135

3.) 12!!

= 12 × 10 × 8 × 6 × 4 × 2

= 120 × 48 × 8

= 5.760 × 8

= 46.080

4.) 11!!

= 11 × 9 × 7 × 5 × 3 × 1

= 99 × 35 × 3

= 3.465 × 3

= 10.395

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