Data is the information in the inexperienced or disordered information such as letters, symbols, or numbers that apply to, or picture, positions, opinions, or objects. Primary, or "statistical" are the kind of data that are managed essentially for producing official statistics and introduce analytical surveys and statistics. Statistical specialists relate to data that are managed for some certain expectations and include statistics and officially transferred reviews. Non-statistical references refer to the data that are obtained for other regulatory expectations or the individual sector.

1. take LCM of 7 and 5
2. LCM is 35
3. then multiply 2 / 7 with such a number so that we could get 35 that is 2 / 7 *5= 10/35
4. multiply 2/5 to get 35 that is 2 / 5 into 7 equals to 14 upon 35
5. so we will have to find the numbers between 10 / 35 and 14 / 35
6. show the numbers are 11/35 12/35 13/35
7. we could get three numbers only but the question is we need five rational numbers
8. so we will multiply the LCM with two that is 70 70 also comes in Table of 7 and 5
9. then multiply 2/7 with 10 to get 20/70
10. multiply 2/5 with 14 to get 28 / 70
11. so now we get so many rational numbers between these two these are as follows 21 / 70 22 / 70 23 / 70 24/70 25/70 26 / 70 and so on

आदर्श माध्य की विशेषताएँ :

• यह सुस्पष्ट परिभाषित होना चाहिए :
  माध्य को स्पष्टतः परिभाषित होना चाहिए जिससे कि उसका केवल एक ही अर्थ लगाया जा सके।
• यह समझने में सरल तथा गणना करने में आसान होना चाहिए :
  माध्य ऐसा होना चाहिए कि वह समझने में सरल तथा गणना करने में आसान हो।
• यह सभी मूल्यों पर आधारित होना चाहिए :
  अच्छे माध्य को श्रेणी के सभी मूल्यों पर आधारित होना चाहिए।: इसके बिना माध्य समंक श्रेणी का सही प्रतिनिधि नहीं बन सकेगा।
• यह चरम मूल्यों (अधिकतम/न्यूनतम) से कम प्रभावित होना चाहिए :
  किसी भी समंक श्रेणी अत्यधिक छोटे व अत्यधिक बड़े मूल्यों का माध्य पर प्रभाव न्यूनतम होना चाहिए।
• यह अन्य बीजगणितीय विवेचन में आसान होना चाहिए :
  एक अच्छे सांख्यिकीय माध्य में कुछ ऐसी गणितीय विशेषताएँ होनी चाहिए कि उससे आगे बीजगणितीय विवेचन संभव हो सके। जैसे यदि हमें कुछ समूहों के मध्य मूल्य और आवृत्ति ज्ञात है तो उनसे उन समूहों का सामूहिक माध्य ज्ञात किया जा सकता है।

बहुलक के दो गुण 

• यह अति सीमान्त पदों से प्रभावित नहीं होता।
• कभी-कभी एक समूह में दो-या-दो से अधिक बहुलके भी हो सकते हैं।

बहुलक के दो दोष 

• सभी पदों पर आधारित न होने के कारण इसका बीजीय विवेचन सम्भव नहीं है।
• कभी-कभी एक समूह में दो-या-दो से अधिक बहुलक भी हो सकते हैं।

1. In Fig. 6.13, lines AB and CD intersect at O. If AOC +BOE = 70° and BOD = 40°, find BOE and reflex COE.

Solution:

From the diagram, we have

(AOC +BOE +COE) and (COE +BOD +BOE) forms a straight line.

So, AOC+BOE +COE = COE +BOD+BOE = 180°

Now, by putting the values of AOC+BOE = 70° and BOD = 40° we get

COE = 110° and

BOE = 30°

For more click:

<a href="https://mycbseguide.com/blog/ncert-solutions-for-class-9-maths-exercise-6-1/" ping="/url?sa=t&source=web&rct=j&url=https://mycbseguide.com/blog/ncert-solutions-for-class-9-maths-exercise-6-1/&ved=2ahUKEwiWrY2woPLsAhWLwjgGHZVtARIQFjAAegQIBBAC" rel="noopener" target="_blank">NCERT Solutions for Class 9 Maths Exercise 6.1 ...</a>

• The economic inequality between the Dutch speaking and French-speaking was the basic cause of tension.
• The French-speaking community who was in minority was relatively rich and powerful whereas the Dutch-speaking community who was in majority was poor.
• This was resented by the Dutch-speaking community who for the benefit of economic development and education much later.                    

• The tension between the two communities was more acute in Brussels. Brussels presented a special problem : the Dutch speaking people constituted a majority in the country, but a minority in the capital.

• Between 1970 and 1993, the Belgium government amended their constitution four times so as to work out an arrangement that would enable everyone to live together within the same country. ‘

Difference. The balance of payment account is broadly divided into two sub accounts – Balance of payment on Current Account and Balance of payment on Capital Account. Simply put, current account of BOP is that account which records export and import of goods, export and import of services and unilateral transfers (Real transactions). Capital account of BOP is that account which records transactions relating to purchase and sale of foreign assets and of foreign liabilities during a year (Financial transactions).Balance of payments has four components (items), namely, (i) exports/imports of goods, (ii) exports/imports of services, (iii) unilateral transfers, and (iv) capital receipts/payments. 

On July 7, HRD Minister Ramesh Pokhriyal announced a major CBSE syllabus reduction with 30% of the syllabus slashed for the year 2020-21 for classes 9 to 12 because of the reduction in classroom teaching time due to the Covid-19 pandemic and lockdown.

CBSE has rationalized the syllabus with the help of suggestions from NCERT and the same has been notified by a new CBSE notification as well.

Deleted syllabus of CBSE Class 12 Biology

For revised syllabus click on the link:

• <a href="http://cbseacademic.nic.in/web_material/CurriculumMain21/revisedsyllabi/SrSecondary/REVISEDBiology_2020-21.pdf" target="_blank">REVISED - Biology</a>

 Given density of aqueous solution is 1.41 gm/ml of which 69% is nitric acid (HNO3).

So, 69% of 1.41 => 1.41 x 69/100 = 0.9729

Density of Nitric Acid = 0.9729 gm/ml

Now, Density = Mass/Volume. So,

0.9729 = Mass of HNO3/1000ml

Mass of HNO3 = 972.9 gm

No. of moles of HNO3 = Mass of HNO3/Molar mass of HNO3

                                       = 972.9/63                

                                       = 15.44 mol.

So Molarity of HNO3 = No. of moles of HNO3/Volume of Solution

                                    = 15.44/1 L

                                    = 15.44 M

(Note) : We find molarity because in the question it is asked to moles per litre which is molarity(M).

Poverty refers to a state in which an individual is unable to fulfill even the basic necessities of life. Poverty in India has been studied from two points: urban and rural.

• In urban areas, poor people include push cart vendors, street cobblers, rag pickers, beggars etc… #they possess few assets.

# They reside in kutcha hutments with walls made of baked mud and roofs made of grass, thatch, bamboo and wood.

# The poorest of them do not even have such dwellings.

# The urban poor are largely the overflow of the rural poor who had migrated to urban was in search of alternative employment and livelihood.

• In Rural Areas, poor people include landless agriculture laborers, cultivators with very small landholdings, landless engaged in a variety of non-agriculture jobs or tenant cultivators with small land holding.

# many of the rural people are landless. Even waste land.

# Many rural people do not get to have even two meals a clay.

HRD Minister Ramesh Nishank announced a major CBSE syllabus reduction for the new academic year 2020-21 on July 7 which was soon followed by an official notification by CBSE on the same.

Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.

The CBSE syllabus has been rationalized keeping intact the learning outcomes so that the core concepts of students can be retained.

Click on the respective links:

<font color="#FF6600"><font style="box-sizing: border-box;">Revised Curriculum for the Academic Year 2020-21</font></font>

<a data-toggle="collapse" href="http://cbseacademic.nic.in/Revisedcurriculum_2021.html#collapse2" style="box-sizing:border-box; color:inherit; text-decoration:none; display:block; font-weight:bold">Revised Secondary Curriculum (IX-X)</a>

<a data-toggle="collapse" href="http://cbseacademic.nic.in/Revisedcurriculum_2021.html#collapse1" style="box-sizing:border-box; color:inherit; text-decoration:none; display:block; font-weight:bold">Revised Senior Secondary Curriculum (XI-XII)</a>