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Find the A.M. between: 7 and 13...

Find the A.M. between: 7 and 13

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Let `A` be the Arithmetic mean.
Then `7, A, 13 `are in AP.
Now, let us solve `A-7 = 13-A `
`=>2A = 13 + 7`
...
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RD SHARMA-ARITHMETIC PROGRESSIONS-Solved Examples And Exercises
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  2. if the A.M. between pth and qth terms of an A.P. be equal to the A.M. ...

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  3. Find the A.M. between: 7 and 13

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  4. Find the A.M. between: 12\ a n d-8

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  5. Find the A.M. between: (x-y)a n d\ (x+y)

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  6. Insert 4 A.M.s between 4 and 19.

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  7. Insert 7 A.M.s between 2 and 17.

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  8. Insert six A.M.s between 15 and -13.

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  9. There are n A.M.s between 3 and 17. The ratio of the last mean to the ...

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  10. Insert AMs between 7 and 71 such that 5^(th) AM is 27. Also find the n...

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  11. If n A.Ms are inserted between two numbers, prove that the sum of the ...

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  12. Insert five numbers between 8 and 26 such that the resulting sequence ...

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