Algebra-1

Option A: 4, 8, 16, 32, 64
In this sequence, the terms are doubling in each step. Each term is obtained by multiplying the previous term by 2. For example, 4 * 2 = 8, 8 * 2 = 16, and so on. Since the terms are not increasing by a constant difference, this sequence is not arithmetic.

Option B: 1, 2, 4, 7, 11
This sequence does not have a constant difference between consecutive terms. The differences between adjacent terms are 1, 2, 3, and 4, respectively. For example, 2 - 1 = 1, 4 - 2 = 2, 7 - 4 = 3, and 11 - 7 = 4. Since the differences are not constant, this sequence is not arithmetic.

Option C (15, 13, 11, 9, 7)
In this seq...