Q. What kind of sequence is this?1,4,9,16,…Choices:(A) arithmetic(B) geometric(C) both(D) neither
Examine Number Pattern: To determine the type of sequence, we need to examine the pattern of the numbers given in the sequence: 1,4,9,16,…First, let's check if it's an arithmetic sequence. An arithmetic sequence has a common difference between consecutive terms.We calculate the difference between the second and the first term: 4−1=3.Then, we calculate the difference between the third and the second term: 9−4=5.Since the differences are not the same, it is not an arithmetic sequence.
Check Arithmetic Sequence: Next, let's check if it's a geometric sequence. A geometric sequence has a common ratio between consecutive terms.We calculate the ratio between the second and the first term: 4/1=4.Then, we calculate the ratio between the third and the second term: 9/4.Since 9 is not a multiple of 4, the ratio is not consistent, and therefore, it is not a geometric sequence.
Check Geometric Sequence: Since the sequence is neither arithmetic nor geometric, let's consider other patterns. We notice that each term is a square of an integer: 12, 22, 32, 42, ... This pattern is characteristic of a sequence of perfect squares, which is neither arithmetic nor geometric.
More problems from Identify arithmetic and geometric sequences