Find the first term a and the common difference d for the following arithmetic progressions -
6, 9, 12, 15, ……
Comparing the given arithmetic progression with general form,
We get, a = 6
and common difference = difference of two consecutive term
i.e. 9 – 6 = 3, 12 – 9 = 3.
Hence, First term a = 6 and common arithmetic difference = 3.
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