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The Number of Girls in a Class is 5 Times the Number of Boys. Which of the Following Cannot be the Total Number of Children in the Class? 24 30 35 42

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Explanation

  • The number of girls in a class is 5 times the number of boys.

Let suppose the number of boys are “b” then number of girls will be “5b” and total number of children will be “6b”.

This clearly indicates that answer should be multiple of “6”.

And the option given here are “24, 30, 35 and 42”; all the options are multiple of “6” except “35”. So “35” is our required answer.

To Find

Total number of children in the class = ?

Solution

Let suppose the number of boys = b

Number of girls = 5b

Total number of children = 6b

This clearly indicates that answer should be multiple of “6”.

And the option given here are “24, 30, 35 and 42”

All the options are multiple of “6” except “35”.

So “35” is our required answer.

Conclusion

The number of girls in a class is 5 times the number of boys. 35 of the following cannot be the total number of children in the class.

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