Show that the sum of (m+n)^(th)and(m-n)^...

Show that the sum of `(m+n)^(th)and(m-n)^(th)` term of an A.P is equal to twice the `m^(th)` term.

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The ratio of 6^(th)and8^(th) term of an A.P is 7:9. Find the ratio of 9^(th) term to 13^(th) term.

If 6 times of 6^(th) term of an A.P is equal to 7 times the 7^(th) term , then the 13^(th) term of the A.P. is ………… .

Knowledge Check

If 6 times of 6^(th) term of an A.P is equal to 7 times the 7^(th) term ,then the 13^(th) term of the A.P. is

A

0

B

6

C

7

D

13

If the p^(th) term if an A.P. is q and the q^(th) term of an A.P is p then the r^(th) term is

A

`q - p + r`

B

`p - q + r`

C

`p + q + r`

D

`p + q - r`

If 6 times of 6th term of an A.P. is equal to 7 times term, then the 13th term of the A.P. is

A

`0`

B

`6`

C

`7`

D

`13`

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If p^(th) term of an AP is q and q^(th) term is p, find (p+q)^(th) term.

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The ratio of the sum of m and n terms of an A.P. is m^(2):n^(2) . Show that the ratio of m^(th) and n^(th) term is 2m - 1 : 2n - 1 .

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