Home
Class 8
MATHS
If the average of m numbers is n^2 an...

If the average of `m` numbers is `n^2` and that of `n` numbers is `m^2` , then the average of `(m+n)` numbers is `m-n` (b) `m n` (c) `m+n` (d) `m/n`

A

m-n

B

mm

C

`(m+n)`

D

`(m)/(n)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • AVERAGE

    S CHAND IIT JEE FOUNDATION|Exercise SELF ASSESSMENT SHEET|10 Videos

  • AVERAGE

    S CHAND IIT JEE FOUNDATION|Exercise SELF ASSESSMENT SHEET|10 Videos

  • AREA AND PERIMETER OF RHOMBUS, TRAPEZIUM AND POLYGONS

    S CHAND IIT JEE FOUNDATION|Exercise Self Assessment Sheet-25 (Chapters 25 and 26)|10 Videos

  • CIRCLES

    S CHAND IIT JEE FOUNDATION|Exercise UNIT TEST - 4 |25 Videos

Similar Questions

Explore conceptually related problems

If the average of m numbers is n^(2) and that of n numbers is m^(2) . Then find the average of ( m + n) numbers.

If the average of m numbers is n^(2) and that of n numbers is m^(2) ,then the average of (m+n) numbers is m-n (b) mn(c)m+n (d) (m)/(n)

If the average of 5 consecutive number starting with m is n. Find the average of 6 consecutive number starting with m + 2

If m and n be the two natural numbers such that m^(n)=25, then the value of n^(m) is

If m^(n).n^(m)=800, then the value of (n)/(m) is (m < n)

If m and n are the two natural number such that m^(n)=25 , then find the value of n^(m) :-

The average of n numbers x_(1),x_(2), …,x_(n) is M. If x_(n) is replaced by x' , then the new average is

If m and n are whole numbers such that m^(n)=121, then the value of (m-1)^(n+1) is a 1 b.10 c.1000 d.121

S CHAND IIT JEE FOUNDATION-AVERAGE-QUESTION BANK
  1. The average of the squares of the first ten natural numbers is

    Text Solution

    |

  2. The average of the two-digit numbers, which remain the same when th...

    Text Solution

    |

  3. If the average of m numbers is n^2 and that of n numbers is m^2 ...

    Text Solution

    |

  4. If the average of a,b,c is M and ab+bc+ca=0, then the average of a^2,b...

    Text Solution

    |

  5. The average of six number is x and average of three of these is y. If ...

    Text Solution

    |

  6. The average weight of 120 student in the second year class of college ...

    Text Solution

    |

  7. The average price of 10 books is Rs 12 while the average price of 8...

    Text Solution

    |

  8. The average salary of male employee in a firm was Rs. 5200 and that of...

    Text Solution

    |

  9. A batsman has a certain average of runs for 16 innings.In the 17th inn...

    Text Solution

    |

  10. There are 50 boys in a class,one boy weighting 40 kg goes away and at ...

    Text Solution

    |

  11. X has twice has much money as thast of y and y has 50% of more money t...

    Text Solution

    |

  12. The average score of two serctions is 28. The average score of section...

    Text Solution

    |

  13. The average age of father and his two sons is 27 years. Five years ago...

    Text Solution

    |

  14. The average marks obtained by five students A,B,C,D and E is 52(3)/(5)...

    Text Solution

    |

  15. In an examination, a pupils average marks was 63 per paper. If he h...

    Text Solution

    |

  16. The average of marks of 28 students in Mathematics was 50. Eight stude...

    Text Solution

    |

  17. The average of 11 players of a cricket team is decreased by 2 month...

    Text Solution

    |

  18. The average monthly salary of the workers in a workshop is Rs. 8500. i...

    Text Solution

    |

  19. The average age of 30 boys in a class is 15 years. One boy aged 20 yea...

    Text Solution

    |

  20. 3 years ago, the average age of a family of 5 members was 17 years. A ...

    Text Solution

    |