find the 31st term of an ap if the 3rd term is 4 and 9th term is -8 which term of A.P is zero
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Answer:
31st term = -52 and 5th term is 0
Step-by-step explanation:
Let the first term be "a" and the common difference be "d"
So, 3rd term = a + 2d = 4
9th term = a + 8d = -8
Solving these two equations, we get a = 8 and d = -2
So 31st term = a + 30d = 8 + 30(-2) = 8 - 60 = -52
To find which term of A.P is 0, you can directly see the pattern as it is 8, 6, 4, 2, 0, -2, -4,......and so on
So, the 5th term is 0
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