Q. What kind of sequence is this?142,122,102,82,…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: 142,122,102,82,…Are the consecutive differences in the sequence equal? 122−142=−20, 102−122=−20, 82−102=−20.The consecutive differences in the sequence are equal.
Identify Arithmetic Sequence: Since the consecutive differences are equal, this indicates that the sequence is an arithmetic sequence. An arithmetic sequence is defined by having a common difference between consecutive terms.
Check for Geometric Sequence: Now, let's check if the sequence could also be geometric by finding the ratios between consecutive terms. 142122≈0.8592, 122102≈0.8361, 10282≈0.8039.The ratios between consecutive terms are not equal.
Confirm Not Geometric Sequence: Since the sequence does not have a common ratio, it is not a geometric sequence. A geometric sequence is defined by having a common ratio between consecutive terms.
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