The number of girls in a class is 5 times the number of boys. Which of the following numbers cannot be the total number of children in the class?
Question and options
The number of girls in a class is 5 times the number of boys. Which of the following numbers cannot be the total number of children in the class?
- 35
- 24
- 42
- 30
Answer and explanation
Correct answer: A - 35
If boys = b, then girls = 5b and the total is 6b, so the total must be a multiple of 6. 24, 42 and 30 are multiples of 6, but 35 is not.
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CUSAT CAT LLM
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