The number of boys in a class is three times the number of girls. Which one of the following numbers cannot represent the total number of children in the class?
A
48
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B
44
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C
42
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D
40
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Solution
The correct option is B42 Let number of girls =x and number of boys =3x. Then, 3x+x=4x= total number of students. Thus, to find exact value of x, the total number of students must be divisible by 4.