मानव स्वास्थ्य और रोग | Class12 NCERT जीव विज्ञान | 11 AM Class By Parth Sir | L16 | Hindi Medium

Class 11 के बाद क्या ? Class 12 Hindi Medium की पढ़ाई साल के शुरू से कैसे करें ?

12 PM Special Class | Class 11 - STRUCTURE OF ATOM || BOHR MODEL By Yakshu Ma'am

दूरी और विस्थापन | Distance And Displacement - Explained In Hindi | Class 11 Physics

Digestion And Absorption/Class 11/NCERT/Chapter 16/Quick Revision Series/NEET

In a class of 60 students, the average age of 25 girls is 12 yr and boys is 14 yr. Two of the students aged 16 and 14 yr leave the class and are replaced by 3 students of ages 12,11 and 10 yr, Find the change in average age of the class.

The distance (in km) of 40 engineers from their residence to their place of work were found as follows: 5 3 10 20 25 11 13 7 12 31 19 10 12 17 18 11 32 17 16 2 7 9 7 8 3 5 12 15 18 3 12 14 2 9 6 15 15 7 6 12 Construct a grouped frequency distribution table with class size 5 for the data given above taking the first interval as 0-5 (5 not included). What main features do you observe from this tabular representation?

The marks obtained (out of 20) by 30 students of a class in a test are as follows: 14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14, 19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20. Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4-8 (excluding 8 and including 4).

In a class of 50 students, 25 take Bengali, 16 take Hindi, 12 students take no language. How many take both Bengali and Hindi? (a) 3 (b) 4 (c) 9 (d) 13

In a class of 100 students, every student has passed in one or more of the three subjects, i.e. History, Economics and English. Among all the students , 24 students have passed in English only , 14 students have passed in History only, 11 students have passed in both English and Economics only, and 12 students have passed in both English and History only. A total of 50 students have passed in History. If only 5 students have passed in all three subjects, then how many students have passed in Economics only? 100 छात्रों की एक कक्षा में, प्रत्येक छात्र तीन विषयों यानी इतिहास, अर्थशास्त्र तथा अंग्रेजी में से एक या अधिक विषय में पास हुआ है | सभी छात्रों में से, 24 छात्र केवल अंग्रेजी में पास हुए हैं, 11 छात्र अंग्रेजी तथा अर्थशास्त्र दोनों में पास हुए हैं तथा 12 छात्र केवल अंग्रेजी और इतिहास में पास हुए हैं | इतिहास में कुल 50 छात्र पास हुए हैं | यदि सभी तीन विषयों में केवल 5 ही छात्र पास हुए हैं, तो केवल अर्थशास्त्र में पास करने वाले छात्रों की संख्या कितनी है ?