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Find the first term and common differenc...

Find the first term and common difference for each of the A.P.
5,1,-3,-7

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The correct Answer is:
The first term `a = 5` and `d = -4`.
Here, `a=t_(1)=5,t_(2)=1,t_(3)-3,t_(4)=-7,...`
`d=t_(2)-t_(1)=1-5=-4`,
`d=t_(3)-t_(2)=-3-1=-4`,
`d=t_(4)-t_(3)=-7-(-3)=-7+3-4.`
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-ARITHMETIC PROGESSION -PRACTICE SET 3.1
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