Q. What kind of sequence is this?69,69,69,69,…Choices:(A) arithmetic(B) geometric(C) both(D) neither
Verify Consecutive Differences: Let's verify if the differences between consecutive terms are uniform. Given sequence: 69,69,69,69,… Are the consecutive differences in the sequence equal? 69−69=0, 69−69=0, 69−69=0. The consecutive differences in the sequence are equal and are all zero.
Check Equal Ratios: Now, let's check whether the ratios between consecutive terms are equal. Given sequence: 69,69,69,69,ext... Are the ratios between consecutive terms in the sequence equal? 69/69=1, 69/69=1, 69/69=1. Yes, the sequence has a common ratio of 1.
Identify Sequence Type: Arithmetic sequence: Consecutive terms have a common difference. Geometric sequence: Consecutive terms have a common ratio. The sequence 69,69,69,69,… has both a common difference (0) and a common ratio (1). Therefore, it qualifies as both an arithmetic and a geometric sequence.
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