The number of boys in a class is four times the number of girls. Which one of the following numbers cannot represent the total number of children in the class ?
Choose one:
A) A)48
B) B)44
C) C)42
D) D)40
E) E)38
Explanation:   Let number of girls = x and number of boys = 4x.   Then, 4x + x = 5x = total number of students.   Thus, to find exact value of x, the total number of students must be divisible by 5.   Answer: 40
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The number of boys in a class is four times the number of girls. Which one of the following numbers cannot represent the total number of children in the class ?