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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Solution:
– 5, – 1, 3, 7 ….
First term, a = -5
Common difference, d = Second term – First term
d = ( – 1)-( – 5) = 5 – 1 = 4
d= 4