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Given that the 3rd term of an Ap is 10 and the common difference is 2,find the 1st term
Answer:
Let the 1st term be a.
Given that the 3rd term is 10,
10 = a + 2(3-1)
10 = a + 4
a = 10 - 4
a = 6
Therefore, the 1st term is 6.