Find the nth term of an arithmetic sequence $11, 22, 33, 44...$ .

n

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n - 1

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2 n

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11 n

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Solution

The correct option is D $11 n$
Clearly, the difference of successive terms of above sequence is constant which is 11
So given sequence is in AP with first term 11 and common difference $11$
Hence general term is, $a_{n} = a + (n - 1) d = 11 + (n - 1) 11 = 11 n$
Hence option 'D' is correct choice

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