If an-3 = 2n – 5, its nth term is?
- 2n – 8
- 2n – 2
- 2n + 1
- None of these
Explanation
To find the nth term, replace n with n+3:
an = 2(n+3) - 5
an = 2n + 6 - 5
an = 2n + 1
Therefore, the nth term is: 2n + 1
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