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Find the 9th term of A.P …

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Find the 9th term of A.P : 3, 2.5 , 2 , ...

Posted by Abhay Singh 4 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Adithya Dev A 4 years, 5 months ago

a = 3, d = 2.5 - 3 = -0.5, n = 9. an = a + (n - 1) d. a9 = a + 8d = 3 + 8(-0.5) = 3 + (-4) = -1.//

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