First-term of an AP is -2 and 10th term is 28. What is the value of common difference?
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given that first term of the ap is -2 . so a = -2.
also given that 10th term is 28 .
we know that 10th term can be expressed as
a + 9d
so a + 9d = 28
substituting the value of a,
-2 + 9d = 28
= 9d = 30
so d = 30 / 9 = 10/3 or 3.3 (approx).
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2
Answer:
3.3 is the answer or 10/3
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