NCERT 2022 | दहन और ज्वाला - L4 | Combustion and Flame | CLASS 8 विज्ञान | 7 PM Class by Amba Mam

The given chart shows the number of students in Class 4, Class 5, Class 6 and Class 7 who got first class, second class and failed in the final examination. दिए गए आरेख कक्षा 4, कक्षा 5, कक्षा 6 और कक्षा 7 में उन छात्रों की संख्या को दशशाते हैं, जिन्होंने अंतिम परीक्षा में प्रथम श्रेणी, द्वितीय श्रेणी प्राप्त किया और जो असफल रहे। Which class has the highest number of students who passed? किस कक्षा में उत्तीर्ण होने वाले छात्रों की संख्या सबसे अधिक है?

The given chart shows the number of students in Class 4, Class 5, Class 6 and Class 7 who got first class, second class and failed in the final examination. दिए गए आरेख कक्षा 4, कक्षा 5, कक्षा 6 और कक्षा 7 में उन छात्रों की संख्या को दशशाते हैं, जिन्होंने अंतिम परीक्षा में प्रथम श्रेणी, द्वितीय श्रेणी प्राप्त किया और जो असफल रहे। Which class has the least number of students who passed? किस कक्षा में सबसे कम छात्र उत्तीर्ण हुए हैं?

Ratio of the fares of First ,Second and Third class catogory of a train , between two stations is 10:7:2 and the ratio of passenger travelling in these category is 4:9:17 respectively .If the fare is increased by 1/4 in First class , 1/8 in second class and decreased by 10% i Third Class and the ratio of number of passenger in the category remains same .If the total amount received of Rs. 60590 , then find the total amount received from thrid class category .

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows: 1 6 2 3 5 12 5 8 4 8 10 3 4 12 2 8 15 1 17 6 3 2 8 5 9 6 8 7 14 12 (i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5 - 10. (ii) How many children watched television for 15 or more hours a week?

Following are the number of members in 25 families of a village: 6, 8, 7, 7, 6, 5, 3, 2, 5, 6, 8, 7, 7, 4, 3, 6, 6, 6, 7, 5, 4, 3, 3, 2, 5. Prepare a frequency distribution table for the data using class intervals 0-2, 2-4, etc.

In a classroom,4 friends are seated at the points A.B.C and D as shown in Fig.7.8 . Champa and Chameli walk into the class and after observing for a few minutes Champa asks Chameli,Don't you think ABCD is a square? Chameli disagrees.Using distance formula, find which of them is correct.

The number of students in class XI in science, arts and commerce stream of a school over a period of 4 years (2011-2014) has been depicted through the bar chart given below: 4 साल (2011-2014) की अवधि में स्कूल के विज्ञान, कला और वाणिज्य स्ट्रीम में ग्यारहवीं कक्षा में छात्रों की संख्या को नीचे दिए गए दंड आरेख के माध्यम से दर्शाया गया है| What is the average of the number of arts students in the given class over the given period of 4 years? 4 वर्ष की दी गई अवधि में दी गई कक्षा में आर्टस के छात्रों की संख्या का औसत कया है

The ratio of the number of boys in sections A and B of a class is 2 : 3 and the ratio between the total number of boys and girls in sections A and B is 3 : 4. If the number of girls in B is 50% of the number of boys in B, then what will be the ratio between the number of girls in A and B ? एक कक्षा के अनुभाग A और B में लड़कों की संख्या का अनुपात 2:3 है तथा अनुभाग A और B में लड़कों और लड़कियों की कुल संख्या का अनुपात 3:4 है | यदि 8 में लड़कियों की संख्या, B में लड़कों की संख्या की 50% है, तो A और B में लड़कियों की संख्या का अनुपात कितना होगा ?

Consider the marks, out of 100, obtained by 51 students of a class in a test, given in Table 14.9. M a r k s"N u m b e r o f S t u d e n t s"0-10 5 10-20 10 20-30 4 30-40 6 40-50 7 50-60 3 60-70 2 70-80 2 80-90 3 90-100 9Tot a l 51 Draw a freque

Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give answer 1) if the data in statement I alone are sufficient to answer the question while the data in statement II alone are not sufficient to answer the question. 2) if the data in statement II alone are sufficient to answer the question while the data in statement I alone are not sufficient to answer the question. 3) if the data either in statement I alone or in statement II alone are sufficient to answer the question. 4) if the data even in both statements I and II together are not sufficient to answer the question. 5) if the data in both statements I and II together are necessary to answer the question. What is Kumud’s rank in a class of 40? I. Seema, who is 8th from the top in the class, is above Kailash by 18 ranks, who is below Kumud by 7 ranks. II. Nandini, who is between Kumud and Kishori, is 20th from the bottom.