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Standard XII

Mathematics

Difference of Two Sets

If it is know...

Question

If it is known that at least $23$ students were eligible for a Symposium on Chemistry, then the minimum qualifying marks in Chemistry for eligibility to Symposium would lie in the range?

40 - 45

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30 - 40

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20 - 30

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Below

20

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Solution

The correct option is D $20 - 30$
Since $66$ students get $20$ and above marks in Chemistry and out of these $21$ students get $30$ and above marks, therefore to select top $35$ students in Chemistry, the qualifying marks should lie in the range $20 - 30$ .

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Similar questions

If it is known that at least 23 students were eligible for a Symposium on Chemistry and at max. 35 students can be selected, the minimum qualifying marks in Chemistry for eligibility to Symposium would lie in the range:

Q. Read the table and the graph given below carefully and answer the items that follow:
The following table classifies students on the basis of marks obtained by them in different subjects. Maximum marks-50

Subject	40 and above	30 and above	20 and above	10 and above
Physics	10	30	50	57
Chemistry	12	35	55	60
Mathematics	9	21	40	43
Biology	12	28	46	48

Q. If at least 50% of Mathematics students are qualified to take part in a competition, then what will be the range of minimum qualifying marks for eligibility to take part in that competition?

नीचे दिए गए ग्राफ और तालिका को ध्यानपूर्वक पढ़े और आगे आने वाले प्रश्नों के उत्तर दें।
निम्न तालिका, विद्यार्थियों द्वारा विभिन्न विषयों में प्राप्त अंकों के आधार पर उन्हें वर्गीकृत करती है।

Q. यदि गणित के 50% विद्यार्थी एक प्रतियोगिता में सम्मिलित होने हेतु उत्तीर्ण हो जाते हैं तो प्रतियोगिता में सम्मिलित होने की पात्रता के लिए न्यूनतम अर्हता परिसर (रेंज) क्या होगा?

Q. The percentage of number of students getting at least

60

% marks in Chemistry over those getting at least

40

% marks in aggregate, is approximately?

Q. A school has four sections of chemistry in class XII having

40, 35, 45

and

42

students. The mean marks obtained in Chemistry test are

50, 60, 55

and

45

respectively for the four sections. The overall average of marks per students is -

Q. In the frequency distribution of 100 students gives below. The number of students corresponding to marks groups 10-20 and 30-40 are missing from the table. However, the median is known to be 23. Find the missing frequencies

Marks	0−10	10−20	20−30	30−40	40−50
No. of Students	8	?	40	?	10

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If it is known that at least 23 students were eligible for a Symposium on Chemistry, then the minimum qualifying marks in Chemistry for eligibility to Symposium would lie in the range?

The correct option is D 20−30Since 66 students get 20 and above marks in Chemistry and out of these 21 students get 30 and above marks, therefore to select top 35 students in Chemistry, the qualifying marks should lie in the range 20−30.

If it is known that at least $23$ students were eligible for a Symposium on Chemistry, then the minimum qualifying marks in Chemistry for eligibility to Symposium would lie in the range?

The correct option is D $20 - 30$
Since $66$ students get $20$ and above marks in Chemistry and out of these $21$ students get $30$ and above marks, therefore to select top $35$ students in Chemistry, the qualifying marks should lie in the range $20 - 30$ .