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Sebuah mata uang logam dilemparkan sebanyak 4 kali. Tentukan peluang muncul angka paling banyak 4 kali.

Sebuah mata uang logam dilemparkan sebanyak 4 kali. Tentukan peluang muncul angka paling banyak 4 kali.space

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N. Puspita

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Jawaban terverifikasi

Jawaban

peluang muncul angka paling banyak 4 kali adalah .

 peluang muncul angka paling banyak 4 kali adalah 1.

Pembahasan

Pembahasan
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Misalkan adalahkejadian muncul angkamaka adalah kejadian muncul bukan angkaatau muncul gambar. Diketahui Sehingga Dengan demikianpeluang muncul angka paling banyak 4 kali adalah .

Misalkan straight A adalah kejadian muncul angka maka straight A to the power of straight c adalah kejadian muncul bukan angka atau muncul gambar.

Diketahui

table attributes columnalign right center left columnspacing 0px end attributes row cell straight P open parentheses A close parentheses end cell equals cell 1 half end cell row cell straight P open parentheses A to the power of c close parentheses end cell equals cell 1 minus 1 half equals 1 half end cell row n equals 4 end table

Sehingga

table attributes columnalign right center left columnspacing 0px end attributes row cell straight P open parentheses x less or equal than 4 close parentheses end cell equals cell straight P open parentheses 0 close parentheses plus straight P open parentheses 1 close parentheses plus straight P open parentheses 2 close parentheses plus straight P open parentheses 3 close parentheses plus straight P open parentheses 4 close parentheses end cell row blank equals cell straight C subscript 0 superscript 4 cross times open parentheses straight P open parentheses A close parentheses close parentheses to the power of 0 cross times open parentheses straight P open parentheses A to the power of c close parentheses close parentheses to the power of 4 minus 0 end exponent plus C subscript 1 superscript 4 cross times open parentheses straight P open parentheses A close parentheses close parentheses to the power of 1 cross times open parentheses straight P open parentheses A to the power of c close parentheses close parentheses to the power of 4 minus 1 end exponent plus end cell row blank blank cell straight C subscript 2 superscript 4 cross times open parentheses straight P open parentheses straight A close parentheses close parentheses squared cross times open parentheses straight P open parentheses straight A to the power of straight c close parentheses close parentheses to the power of 4 minus 2 end exponent plus straight C subscript 3 superscript 4 cross times open parentheses straight P open parentheses straight A close parentheses close parentheses cubed cross times open parentheses straight P open parentheses straight A to the power of straight c close parentheses close parentheses to the power of 4 minus 3 end exponent plus end cell row blank blank cell straight C subscript 4 superscript 4 cross times open parentheses straight P open parentheses straight A close parentheses close parentheses to the power of 4 cross times open parentheses straight P open parentheses straight A to the power of straight c close parentheses close parentheses to the power of 4 minus 4 end exponent end cell row blank equals cell fraction numerator 4 factorial over denominator 4 factorial times 0 factorial end fraction cross times open parentheses 1 half close parentheses to the power of 0 cross times open parentheses 1 half close parentheses to the power of 4 plus fraction numerator 4 factorial over denominator 3 factorial times 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 cubed plus end cell row blank blank cell fraction numerator 4 factorial over denominator 2 factorial times 2 factorial end fraction cross times open parentheses 1 half close parentheses squared cross times open parentheses 1 half close parentheses squared plus fraction numerator 4 factorial over denominator 3 factorial times 1 factorial end fraction cross times open parentheses 1 half close parentheses cubed cross times open parentheses 1 half close parentheses to the power of 1 plus end cell row blank blank cell fraction numerator 4 factorial over denominator 0 factorial times 4 factorial end fraction cross times open parentheses 1 half close parentheses to the power of 4 cross times open parentheses 1 half close parentheses to the power of 0 end cell row blank equals cell 1 times 1 times 1 over 16 plus 4 times 1 half times 1 over 8 plus 6 times 1 fourth times 1 fourth plus end cell row blank blank cell 4 times 1 over 8 times 1 half plus 1 times 1 over 16 times 1 end cell row blank equals cell 1 over 16 plus 4 over 16 plus 6 over 16 plus 4 over 16 plus 1 over 16 end cell row blank equals cell 16 over 16 end cell row blank equals cell 1 space end cell end table

Dengan demikian peluang muncul angka paling banyak 4 kali adalah 1.

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