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5n-4; a12 and a15

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5n-4; a12 and a15

Posted by Niharika Chennuru 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 6 years, 3 months ago

A_n = 5n-2
First term,a = 5×1-2 = 3
second term,a 2 = 5×2-2 = 8
d = a₂-a₁ = 8-3 = 5
12th term = 5×12 - 2= 60-2 = 58

15th term = 5×15 - 2= 75 - 2 = 73

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CBSE > Class 10 > Mathematics