In a class, the number of boys is twice that of the girls. Rekha is ranked 17th from the top. If there are 7 girls ahead of Rekha and the rank of Rekha is 20th from the bottom in the class, how many girls are after Rekha?

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None of the above

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Solution

The correct option is B 4
Total number of students in the class = 17 + 20 - 1 = 36
Number of boys in the class = 24
Number of girls in the class = 12
7 girls are ahead of Rekha, so there are 12 - 7 - 1 = 4 girls after Rekha.

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In a class, the number of boys is twice that of the girls. Rekha is ranked 17th from the top. If there are 7 girls ahead of Rekha and the rank of Rekha is 20th from the bottom in the class, how many girls are after Rekha?

The correct option is B 4Total number of students in the class = 17 + 20 - 1 = 36 Number of boys in the class = 24 Number of girls in the class = 12 7 girls are ahead of Rekha, so there are 12 - 7 - 1 = 4 girls after Rekha.

The correct option is B 4
Total number of students in the class = 17 + 20 - 1 = 36
Number of boys in the class = 24
Number of girls in the class = 12
7 girls are ahead of Rekha, so there are 12 - 7 - 1 = 4 girls after Rekha.