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Sebuah dadu dilambungkan sebanyak 5 kali. Peluang muncul mata dadu genap paling banyak tiga kali sebesar ...

Sebuah dadu dilambungkan sebanyak 5 kali. Peluang muncul mata dadu genap paling banyak tiga kali sebesar ...

  1. begin mathsize 14px style 5 over 32 end style 

  2. begin mathsize 14px style 3 over 16 end style 

  3. begin mathsize 14px style 1 fourth end style 

  4. begin mathsize 14px style 15 over 32 end style 

  5. begin mathsize 14px style 13 over 16 end style 

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S. Yoga

Master Teacher

Mahasiswa/Alumni Universitas Pendidikan Indonesia

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Jawaban

peluang muncul dadu genap paling banyak 3 kali adalah .

peluang muncul dadu genap paling banyak 3 kali adalah begin mathsize 14px style 25 over 32 end style.

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Pembahasan

Sebuah dadu dilempar sebanyak 5 kali, muncul dadu genap paling banyak 3kali, . Angka genap dalam mata dadu adalah . Peluang muncul angka genap: Peluang muncul angka ganjil: Peluang muncul dadu genap 1kali : Peluang muncul dadu genap 2kali : Peluang muncul dadu genap 3kali : Peluang muncul dadu genap paling banyak 3 kali: Jadi, peluang muncul dadu genap paling banyak 3 kali adalah .

Sebuah dadu dilempar sebanyak 5 kali,
muncul dadu genap paling banyak 3 kali, begin mathsize 14px style straight r equals 1 space atau space straight r equals 2 space atau space straight r equals 3 end style.
Angka genap dalam mata dadu adalah begin mathsize 14px style left curly bracket 2 comma space 4 comma space 6 right curly bracket end style.

Peluang muncul angka genap:

begin mathsize 14px style straight p equals 3 over 6 equals 1 half end style 

Peluang muncul angka ganjil:

begin mathsize 14px style straight q equals 3 over 6 equals 1 half end style 

Peluang muncul dadu genap 1 kali begin mathsize 14px style left parenthesis straight r equals 1 right parenthesis end style:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row straight P equals cell straight C subscript straight r superscript straight n cross times straight p to the power of straight r cross times straight q to the power of straight n minus straight r end exponent end cell row blank equals cell straight C subscript 1 superscript 5 cross times open parentheses 1 half close parentheses to the power of 1 cross times open parentheses 1 half close parentheses to the power of 5 minus 1 end exponent end cell row blank equals cell fraction numerator 5 factorial over denominator left parenthesis 5 minus 1 right parenthesis factorial 1 factorial end fraction cross times open parentheses 1 half close parentheses to the power of 1 cross times open parentheses 1 half close parentheses to the power of 5 minus 1 end exponent end cell row blank equals cell fraction numerator 5 over denominator 1 factorial end fraction cross times 1 over 32 end cell row blank equals cell 5 over 32 end cell end table end style 

Peluang muncul dadu genap 2 kali begin mathsize 14px style left parenthesis straight r equals 2 right parenthesis end style:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row straight P equals cell straight C subscript straight r superscript straight n cross times straight p to the power of straight r cross times straight q to the power of straight n minus straight r end exponent end cell row blank equals cell straight C subscript 2 superscript 5 cross times open parentheses 1 half close parentheses squared cross times open parentheses 1 half close parentheses to the power of 5 minus 2 end exponent end cell row blank equals cell fraction numerator 5 factorial over denominator left parenthesis 5 minus 2 right parenthesis factorial 2 factorial end fraction cross times open parentheses 1 half close parentheses squared cross times open parentheses 1 half close parentheses to the power of 5 minus 2 end exponent end cell row blank equals cell fraction numerator 5 over denominator 2 factorial end fraction cross times 1 over 8 end cell row blank equals cell 5 over 16 end cell end table end style 

Peluang muncul dadu genap 3 kali begin mathsize 14px style left parenthesis straight r equals 3 right parenthesis end style:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row straight P equals cell straight C subscript straight r superscript straight n cross times straight p to the power of straight r cross times straight q to the power of straight n minus straight r end exponent end cell row blank equals cell straight C subscript 3 superscript 5 cross times open parentheses 1 half close parentheses cubed cross times open parentheses 1 half close parentheses to the power of 5 minus 3 end exponent end cell row blank equals cell fraction numerator 5 factorial over denominator left parenthesis 5 minus 3 right parenthesis factorial 3 factorial end fraction cross times open parentheses 1 half close parentheses cubed cross times open parentheses 1 half close parentheses to the power of 5 minus 3 end exponent end cell row blank equals cell fraction numerator 5 over denominator 2 factorial end fraction cross times 1 over 8 end cell row blank equals cell 5 over 16 end cell end table end style 

Peluang muncul dadu genap paling banyak 3 kali:

begin mathsize 14px style 5 over 32 plus 5 over 16 plus 5 over 16 equals 25 over 32 end style 

Jadi, peluang muncul dadu genap paling banyak 3 kali adalah begin mathsize 14px style 25 over 32 end style.

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