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प्रश्न
Write the nth term of the following sequences.
2, 2, 4, 4, 6, 6, . . .
उत्तर
The odd terms are a1 = 2, a3 = 4, a5 = 6
The even terms are a2 = 2, a4 = 4, a6 = 6
∴ an = `{{:("n" + 1, "if n is odd"),("n", "if n is even"):}`
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