to enroll in courses, follow best educators, interact with the community and track your progress.
Enroll
129
Average tricks- Persons come and go out (In Hindi)
199 plays

More
This course is highly recommended to all the students who are preparing for SSC and In these videos we have discussed all important concepts , tricks and questions.

Abhilash Kumar
Online Educator Cleared SSC CGL, RRB & UGC NET. Teaching from 4 years in many recognize institutes of Kanpur.

U
Thanks. Do share and make support for us😊👍
A
A

2. Out of 10 teachers of a school, one teacher retires and in placed of him a new teacher 25 yrs came. As a result of it average age of the teachers reduces by 3yrs. Age of the retired teacher is a) 55 b) 65 c) 75 d)45

3. = 30%

4. The average age of 8 persons is increased by 2 years, when one of them, whose age is 24 years is replaced by a new person. The age of the new person is a) 42 years b) 40 years c) 45 year:s d)38 years

5. The average age of 8 men is increased by 2 years when two of them whose age are 21 and 23 years replaced by two new men. The average age of the two new men is a) 22 years b)24 years c) 30 year:s d)28 years

6. Average weight of 25 persons is increased by 1 kg when one man weighting 60 kg is replaced by a new person. Weight of new person is a) 50 kg b)61 kg c) 86 kg d)85 kg

7. The average age of 11 players of a cricket team is increased by 2 months when two of them aged 18 years and 20 years are replaced by two new players. The average age of the new players is a) 19 years 1 month b)19 years 6 month c) 19 years 11 montlh d)19 years 5 month

8. 38 st

9. THANKS FOR WATCHING RATE LIKE unacademy ENROLL/SAVE FOLLOW

10. If the average weight of 6 students is 50 kg. If two student of average age of 51 kg added and other students of average age of 55 kg also added then the average weight of all students is a) 51.5 kg b) 61 kg c) 51.2kg d)52 kg

11. The average marks of 100 students were found to be 40. Later on it was discovered that a score of 53 was misread as 83. Find the correct average corresponding to the correct score. a) 39 kg b) 41 kg c) 38.7 kg d)39.7 kg

12. The average of 18 observations is recorded as 124. Later it was found that two observations with values 64 and 28 were entered wrongly as 46 and 82. Find the correct average of the 18 observations. a) 122 b) 123 c) 111(7/9) d)137(3/9)

13. Activate Windows

14. be divided .irdo

15. THANKS FOR WATCHING RATE LIKE unacademy ENROLL/SAVE FOLLOW