The number of students who study only Java is___

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Solution

Number of students studying only Java = 20.

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Q. Calculate the number of students who study only Java

In a certain class of 300 students, the number of students who either do not study at home or do not attend classes is a third more than of those who either study at home or attend classes. The number of students who do not study at home but attend classes is two fifths more than those who study at home but do not attend classes, while the number of students who study at home as well as attend classes is half of those who neither study at home nor attend classes. If the number of students who only study at home or only attend classes is a third less than those who do either, then how many students who either do neither or do both?

Q. Read the information given in the passage and answer the given questions.
There are 19000 students in college P. Each of them is studying either one or more of the given languages Japanese, Korean and Latin. The ratio of male to female students is 9: 11. 14% of the male students study only Japanese, 12% study only Korean and 20% study only Latin. 16% of the male students study only Japanese and Korean, 22% study only Korean and Latin and 8% study only Japanese and Latin. The remaining male students study all the given languages. 22% of the female students study only Japanese, 18% study only Korean and 20% study only Latin. 12% of the female students study only Japanese and Korean, 16% study only Korean and Latin and 10% study only Japanese and Latin. The remaining female students study all the given languages.

What is the ratio of the number of male students who study Korean to the number of female students who study the same language?

Q. Read the information given in the passage and answer the given questions.
There are 19000 students in college P. Each of them is studying either one or more of the given languages Japanese, Korean and Latin. The ratio of male to female students is 9: 11. 14% of the male students study only Japanese, 12% study only Korean and 20% study only Latin. 16% of the male students study only Japanese and Korean, 22% study only Korean and Latin and 8% study only Japanese and Latin. The remaining male students study all the given languages. 22% of the female students study only Japanese, 18% study only Korean and 20% study only Latin. 12% of the female students study only Japanese and Korean, 16% study only Korean and Latin and 10% study only Japanese and Latin. The remaining female students study all the given languages.

What is the difference between the number of female students who study Latin and the number of male students who study the same language?

Q. In a survey of some students, it was found that

60 %

of the students were studying commerce and

40 %

were studying science. If 40 students were studying both the subjects and

10 %

did not study any of two subjects, by drawing a Venn diagram, find :
i) the total number of students
ii) the number of students who were studying science only

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