Mathematics

Question

What is the common ratio in this geometric sequence 3,-6,12,-24,48

1 Answer

  • The common ratio refers to the number that multiplies the previous term to get the next term.

    For me, -2 pops out as the answer. Let's test it out.

    First, multiply -2 by 3.

    3 * -2 = -6

    Now we have our second term and it matches up with -6 inĀ 3,-6,12,-24,48.

    Now multiply it again by -2.

    -6 * -2 = 12

    Yup, we can say -2 is the answer to this question.
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