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Question
Common difference, d = ? for the given A.P., 7, 14, 21, 28 ........
Activity :- Here t1 = 7, t2 = 14, t3 = 21, t4 =
t2 − t1 =
t3 – t2 = 7
t4 – t3 =
Therefore, common difference d =
Solution
Here t1 = 7, t2 = 14, t3 = 21, t4 = 28
t2 − t1 = 14 – 7 = 7
t3 – t2 = 7
t4 – t3 = 28 – 21 = 7
Therefore, common difference d = 7
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