Question

An AP consists of 50 terms of which 3rd term is 12 and the last term is 106 find the sum of 25 terms.​

Answer 1

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a + 2d = 12

a + 49d = 106

47d = 94

d = 2

a + 4 = 12

a = 8

25 Th term:-

a + 24 D = 8 + 50 = 58

Answer 2

Answer:

$\huge\mathcal{\fcolorbox{cyan}{black}{\pink{ᴀɴsᴡᴇʀ࿐}}}$

a + 2d = 12

a + 49d = 106

47d = 94

d = 2

a + 4 = 12

a = 8

25 Th term:-

a + 24 D = 8 + 50 = 58