Q. What kind of sequence is this?124,113,102,91,…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: 124,113,102,91,ext... Are the consecutive differences in the sequence equal? 113−124=−11, 102−113=−11, 91−102=−11. 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. 124113≈0.911, 113102≈0.903, 10291≈0.892. The ratios between consecutive terms are not equal.
Final Sequence Classification: Since the sequence has a common difference but not a common ratio, it is an arithmetic sequence and not a geometric sequence.
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