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The 7^(th) term of an A.P. is 5 times th...

The `7^(th)` term of an A.P. is 5 times the first term and its `9^(th)` term exceeds twice the `4^(th)` term by 1 . The first term of the A.P. is

A

`151`

B

`-39`

C

`3`

D

`-124`

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Knowledge Check

  • The 4th term of A.P. is equal to 3 times the first term and 7th term exceeds twice the third term by 1. Find its nth term.

    A
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    B
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    D
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  • The m^(th) term of an A.P. is n and n^(th) term is m its p^(th) term is

    A
    `m-n+p`
    B
    `n+p -m`
    C
    `m+n-p`
    D
    `m+n+p`

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