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If an A.P. is such that (a4)/(a7)=2/7, f...

If an A.P. is such that `(a_4)/(a_7)=2/7,` find `(a_6)/(a_8)` .

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Verified by Experts

We know, a n
​ =a+(n−1)d
Putting the value given, we get
4=a+(7−1)(−4) or a=4+24
...
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RD SHARMA-ARITHMETIC PROGRESSIONS-Solved Examples And Exercises
  1. If (m+1) term of an A.P. is twice the(n+1) th term, prove that (3m+1) ...

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  2. If a1,a2,a3, ,an are in A.P. with common difference d(w h e r ed!=0), ...

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  3. If an A.P. is such that (a4)/(a7)=2/7, find (a6)/(a8) .

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  8. If a1,a2,a3, ,an are in A.P., where ai >0 for all i , show that 1/(sqr...

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  12. If there are (2n+1) terms in A.P., then prove that the ratio of the su...

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  13. The ratio of the sum of n terms of two A.P. s is (7n+1):(4n+27) . Fin...

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