In a class total 34 students, 16 are have a brother, 15 are have sisters, 9 students don't have either brothers or sisters.Find the number of students having both brother and sisters.
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Answer / Vijay Chauhan
First, let's find the number of students who have at least one sibling: Total Students with Siblings = Total Students - Students without siblings = 34 - 9 = 25. Next, we know that there are 16 students with brothers and 15 students with sisters, which sums up to more than the total number of students with at least one sibling (25). This means some students have both a brother and a sister. Therefore, let's find the difference between the total students with siblings and the number we already know: Number of Students with Both Brother and Sister = Total Students with Siblings - (Students with Brothers + Students with Sisters) = 25 - (16 + 15) = 4.
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