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Deepak Bora
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Find the 1st term & common difference of -5, – 1, 3, 7 …

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This question is of class 10th NCERT Chapter- Arithmetic Progression Question no. 3(ii).  Here first you have to find the First term and then calculate the common difference. Solve the following question.

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  1. Solution:

    – 5, – 1, 3, 7 ….

    First term, a = -5

    Common difference, d = Second term – First term

    d = ( – 1)-( – 5) = 5 – 1 = 4

    d= 4

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