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

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

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Let` A` be the Arithmetic mean.
Then `x – y, A, x + y` are in AP .
Now, let us solve ,
`A – (x – y) = (x + y) – A `
...
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RD SHARMA-ARITHMETIC PROGRESSIONS-Solved Examples And Exercises
  1. Find the A.M. between: 7 and 13

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

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

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

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

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

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

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

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

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

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  11. A man saved Rs. 16500 in ten years. In each year after the first he sa...

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  12. A man saves Rs. 32 during the first year, Rs. 36 in the second year an...

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  13. A man arranges to pay a debt of Rs 3600 in 40 monthly installments whi...

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  14. A manufacturer of radio sets produced 600 units in the third year and ...

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  15. 25 trees are planted in a straight line 5 metre apart from each other....

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  16. A man is employed to count Rs. 10710. He counts at the rate of Rs. 180...

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  17. A piece of equipment cost a certain factory Rs. 600,000. If it depre...

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  18. A farmer buys a used tractor for Rs. 12000. He pays Rs. 6000 cash and ...

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  19. Shamshad Ali buys a scooter for Rs. 22000. He pays Rs. 4000 cash and ...

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  20. the income of a person is Rs. 300,000 in the first year and he rece...

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