Question

first and 129th term of an ap are 2 and 258 find the 65th term​

Answer 1

Answer:

130

Step-by-step explanation:

Tn = a + (n-1 )d

258 = 2 + 128d

128d = 258-2

128d = 256

d = 256-128

d = 2

Tn = a + (n-1 )d

Tn = 2 + (65-1)2

Tn = 2 + 64*2

Tn = 2 + 128

Tn = 130

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