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Question
Write the first 6 terms of the sequences whose nth term an is given below
an = `{{:("n" + 1, "if" "n is odd"),("n", "if" "n is even"):}`
Solution
n = 1, an = n + 1, a1 = 1 + 1 = 2
n = 2, an = n, a2 = 2
n = 3, an = n + 1, a3 = 3 + 1 = 4
n = 4, an = n, a4 = 4
n = 5, an = n + 1, a5 = 5 + 1 = 6
n = 6, an = n, a6 = 6
∴ The first six terms are 2, 2, 4, 4, 6, 6
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