72% of 25 students are interested in mathematics. How many are not interested in mathematics?

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answer is C.

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Detailed Solution

It is given that 72% of 25 students are interested in mathematics.
We know that,
Not interested students= Total Students - Interested Students
Total number of students = 25
Percentage of interested students = 72%
Calculating the number of students who are not interested in mathematics
Number of interested students= 72% of 25 students
Number of interested students,

= 72100 × 25 = 18 Students

Number of students who are not interested in mathematics,
=25-18
=7
Hence, the number of students who are not interested in mathematics is 7 students.
Therefore, option 3 is correct.

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