Sepasang suami istri yang baru menikah merencanakan akan memiliki 4 orang anak. Peluang suami istri tersebut memiliki 3 orang anak perempuan adalah... Pengerjaan nya tolong di kertas kak, lewat teks kurang paham. Terimakasih 🙏

<p>jawaban = D. ¹/₄</p><p>&nbsp;</p><p>lesaian:</p><p>pakai segitiga pascal.</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1 &nbsp; &nbsp; 1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ---&gt; 1 anak</p><p>&nbsp; &nbsp; &nbsp; &nbsp;1 &nbsp; &nbsp; 2 &nbsp; &nbsp; 1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;---&gt; 2 anak</p><p>&nbsp; &nbsp;1 &nbsp; &nbsp; 3 &nbsp; &nbsp; 3 &nbsp; &nbsp; 1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;---&gt; 3 anak</p><p>1 &nbsp; &nbsp; 4 &nbsp; &nbsp; 6 &nbsp; &nbsp; 4 &nbsp; &nbsp; 1 &nbsp; &nbsp; &nbsp;---&gt; 4 anak</p><p>0L &nbsp; 1L &nbsp; 2L &nbsp;3L &nbsp;4L</p><p>4P &nbsp; 3P &nbsp; 2P &nbsp;1P &nbsp;0P</p><p>kalau memiliki 4P (4 anak perempuan), n(A) = 1</p><p>kalau memiliki 3P dan 1P (3 anak perempuan dan 1 anak laki-laki), n(A) = 4</p><p>kalau memiliki 2P dan 2L (2 anak perempuan dan 2 anak laki-laki), n(A) = 6</p><p>kalau memiliki 1P dan 3L (1 anak perempuan dan 3 anak laki-laki), n(A) = 4</p><p>kalau memiliki 4L (4 anak laki-laki), n(A) = 1</p><p>&nbsp;</p><p>Jadi, peluang suami istri tersebut memiliki 3 orang anak perempuan.</p><p>n(A) = 4</p><p>n(S) = 1 + 4 + 6 + 4 + 1 = 16</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;n(A)</p><p>P(A) = -----</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;n(S)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;4</p><p>P(A) = -----</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 16</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1</p><p>P(A) = -----</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;4</p><p>&nbsp;</p><p>semoga membantu.</p>