1) Write down the first 5 terms of each of the following sequences: {bn}a_1, where bn = nth digit of " {(-1)"} i. ii. iii. iv. e2n ex. n n=1 (-1)" n n=1 {(−1)²+¹}} n=1

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A: For an arithmetic sequence, we have,S17=187a17=-13 To Find:ana21

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