Std 6 Social Science Final Exam 2022 || Dhoran 6 Samajik Vigyan

Class 10 Social Science | Contemporary India | Chapter 6 Manufacturing Industries | Important Questions and Quick Revision |

Class 10 Social Science| Democratic Politics Chapter 6 | Political Parties | Important Questions | Quick Revision

There are 8 math's books and 6 science books in a almirah. In how many wayscan 4 books of each subject be selected?

Amar wrote exams in four subjects - Maths, Science, Hindi and Social Studies. The ratio of marks he got in these exams was 2:3:4:5 . He got an aggregate of 70% in these exams. Each exam had the same maximum marks. In how many of these subjects did he get more than 50%?

Out of 100 students, 15 passed in English, 12 passed in Mathmatics, 8 in Science, 6 in English and Mathematics, 7 in Mathematics and Science , 4 in English and Science, 4 in all the three. Find how many passed (i) in English and Mathematics but not in Science. (ii) in Mathematics and Science but not in English. (iii) in Mathematics only. (iv) in more than one subject only.

In a terrestrial telescope, the focal length of objective is 90cm , of inverting lens is 5 cm and of eye lens is 6 cm . If the final image is at 30cm , then the magnification will be the final image is at 30cm, then the magnification will be