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प्रश्न
Which of the following sequences are A.P.? If they are A.P. find the common difference.
2, 4, 6, 8, ...
बेरीज
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उत्तर
The given sequence is 2, 4, 6, 8, ....
Here, t1 = 2, t2 = 4, t3 = 6, t4 = 8
∴ t2 – t1 = 4 – 2 = 2
∴ t3 – t2 = 6 – 4 = 2
∴ t4 – t3 = 8 – 6 = 2
The difference between two consecutive terms is constant.
∴ The given sequence is an A.P. and common difference (d) = 2.
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