Question

An A.P consists of 50 terms of which 3rd terms is 12.
the last terms is 106. Find the 29th term of the AP​

Answer 1

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Answer 2

Answer:

68

n=50

A3 = 12

a+2d= 12-----------1

A50= 106

a+49d=106--------2

2 - 1

47d= 94

------------d=2

Also, a+ 49d = 106

-------a= 12

therefore, A29 = a + 28d = 12 + 56=68