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Permutations , combinations and binomial expansion — Statistics STD 11 Commerce — Question

Gujarat BoardEnglish MediumSTD 11 CommerceStatisticsPermutations , combinations and binomial expansion1 Mark
Question
Selected two flowers are of different colours :
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Answer

$1$ white flowers out of $3$ white flowers can be selected in $3 C_1$ Ways and $1$ pink flower out of $5$ Pink flowers can be selected in $5 C_1$ ways.
$\therefore$ Total combinations $=3 C_1+5 C_1=3 \times 5=15$

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