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The sum of 4th and 8th terms of an A.P. ...

The sum of 4th and 8th terms of an A.P. is 24 and the sum of the 6th and 10th terms is 44. Find the first term and the common difference of the A.P.

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the first term of an A.P.=a
and the common difference of the given A.P. `=d`
As we know that,
`a n=a+(n-1) d`
`a 4=a+(4-1) d`
a `4=a+3 d`
Similarly,
`a=a+7 d`
...
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