Home
Class 7
MATHS
The average of the first five odd prime...

The average of the first five odd prime numbers is

A

7

B

`7.8`

C

8

D

`8.7`

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 -16 |10 Videos

  • AVERAGE

    S CHAND IIT JEE FOUNDATION|Exercise UNIT TEST -3 |20 Videos

  • AVERAGE

    S CHAND IIT JEE FOUNDATION|Exercise UNIT TEST -3 |20 Videos

  • ALGEBRIC IDENTITIES

    S CHAND IIT JEE FOUNDATION|Exercise Self Assessment Sheet-7|10 Videos

  • CIRCLES

    S CHAND IIT JEE FOUNDATION|Exercise UNIT TEST |20 Videos

Similar Questions

Explore conceptually related problems

The average of the first nine prime numbers is (a) 9 (b) 11 (c) 11(1)/(9) (d) 11(2)/(9)

Nine numbers are written in ascending order. The middle number is the average of the nine numbers. The average of the first five larger numbers is 68 and that of five smaller numbers is 44. What is the sum of all nine numbers ?

The average of five numbers is 49. The average of the first and the second numbers is 48 and the fourth and fifth numbers is 28. What is the third number ?

The average of five numbers is 57.8. The average of the first and the second numbers is 77.5 and the fourth and fifth numbers is 46. What is the third number ?

The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then, the sixth number is

Six numbers are arranged in decreasing order. The average of the first five numbers is 30 and the average of the last five numbers is 25. The difference of the first and the last numbers is (a) 20 (b) 25quad (c) 5 (d) 30

The average of five numbers is 34.4 . The average of the first and the second number is 46.5 . The average of the fourth and the fifth number is 18. What is the third number ?

Knowledge Check

  • What will be the average of the first 7 positive odd numbers divisible by 5?

    A
    45
    B
    35
    C
    40
    D
    32

  • Sum of the first five positive prime number is

    A
    20
    B
    39
    C
    28
    D
    18

  • The average of five numbers is 57.8. The average of the first and the second numbers is 77.5 and the fourth and fifth numbers is 46. What is the third number ?

    A
    45
    B
    43
    C
    42
    D
    Cannot be determined
    • S CHAND IIT JEE FOUNDATION-AVERAGE -QUESTION BANK -16
    1. The average of the first five odd prime numbers is

      Text Solution

      |

    2. Find the average of all the numbers between 3 and 42 which are divis...

      Text Solution

      |

    3. A,B,C,D,E are consecutive even numbers . The average of these five nu...

      Text Solution

      |

    4. If 37 a + 37 b =5661 , what is the average of a and b ?

      Text Solution

      |

    5. A student got 85,87,91,82, 90 and x marks in all his subjects. His ave...

      Text Solution

      |

    6. The average of 2, 7, 6 and x is 5 and the average of 18, 1, 6, x...

      Text Solution

      |

    7. If x(1),x(2),x(3),x(4),x(5) are five consecutive odd numbers then th...

      Text Solution

      |

    8. The average of eight numbers is 38 . 4 and the average of seven of ...

      Text Solution

      |

    9. The average age of 24 boys and a teacher is 15. When the teacher's a...

      Text Solution

      |

    10. If the average weight of 6 students is 50 kg , that of 2 students is ...

      Text Solution

      |

    11. The sum of five numbers is 555 . The average of first two numbers is ...

      Text Solution

      |

    12. The average of 20 numbers is 12 . The average of the first 12 number...

      Text Solution

      |

    13. The average of a 6 observations is 45.5. If one new observation is ...

      Text Solution

      |

    14. The average age of 3 friends is 23 .Even if the age of the 4th frie...

      Text Solution

      |

    15. In a joint family , the average age of grandparents is 67 years , th...

      Text Solution

      |

    16. For a week , the average daily rainfall was 0.25 cm. There was no r...

      Text Solution

      |

    17. The average of n numbers is x . When 36 is subtracted from two of t...

      Text Solution

      |

    18. Of the four numbers whose average is 60 , the first is (1)/(4) th ...

      Text Solution

      |

    19. Four years ago the average age of A ,B and C was 25 years .Five yea...

      Text Solution

      |

    20. Out of three numbers , the first is twice the second and is half of t...

      Text Solution

      |