Q. What kind of sequence is this?100,82,64,46,…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: 100,82,64,46,… Are the consecutive differences in the sequence equal? 82−100=−18, 64−82=−18, 46−64=−18. The consecutive differences in the sequence are equal.
Identify Arithmetic Sequence: Since the differences between consecutive terms 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. Given sequence: 100,82,64,46,… Are the ratios between consecutive terms in the sequence equal? 10082=0.82, 8264≈0.7805, 6446≈0.71875. The ratios between consecutive terms are not equal.
Conclude 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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