Home
Class 10
MATHS
What is the common difference of an A P....

What is the common difference of an A P. in which `a_21-a_7=84`

Text Solution

AI Generated Solution

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SAMPLE PAPER 2019

    X BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise SECTION-C|5 Videos

Similar Questions

Explore conceptually related problems

What is the common difference of an AP in which a_(18)-a_(14)=32 ?

If the common difference of an A.P. is 3, then a_20 - a_15 is

Knowledge Check

  • The common difference of the A.P. is :

    A
    2
    B
    -3
    C
    -2
    D
    3

  • If the common difference of an A.P. is 5, then the difference in its 30th and 15th terms is:

    A
    5
    B
    10
    C
    15
    D
    75

  • Arithmetic Progression is a list of numbers in which each term can be obtained by adding/ subtracting a certain quantity to its preceding term. This certain quantity is called the common difference of the A.P., as its value is same (or common) when any two consecutive terms of the A.P. are subtracted. The common difference of an A.P. can be positive, negative or zero. A teacher wrote the following A.P. on the board. What is the common difference of this A.P.?

    A
    11
    B
    `-11`
    C
    9
    D
    `-9`

    • Similar Questions

    Explore conceptually related problems

    If the common difference of an AP is 5, then what is a_(18)-a_(13) ?

    Write the common difference of an A.P. whose n t h term is a_n=3n+7 .

    Write the common difference of an A.P. the sum of whose first \ \ n terms is P/2n^2+Q n

    Arithmetic Progression is a list of numbers in which each term can be obtained by adding/ subtracting a certain quantity to its preceding term. This certain quantity is called the common difference of the A.P., as its value is same (or common) when any two consecutive terms of the A.P. are subtracted. The common difference of an A.P. can be positive, negative or zero. A teacher wrote the following A.P. on the board. If there are 13 terms in this A.P., then what is the value of the last term?

    Arithmetic Progression is a list of numbers in which each term can be obtained by adding/ subtracting a certain quantity to its preceding term. This certain quantity is called the common difference of the A.P., as its value is same (or common) when any two consecutive terms of the A.P. are subtracted. The common difference of an A.P. can be positive, negative or zero. A teacher wrote the following A.P. on the board. If the last term of this A.P. is 67, then what is the 8th term from the end?

    Home
    Profile