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Question 1:
The number of girls in a class are 7 times the number of boys, which value can never be the of total students
A. 40
B. 48
C. 24
D. 30
Feedback Let the boys are X, then girls are 7X, total = X+7X = 8X
So it should be multiple of 8, 30 is not a multiple of 8.

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