Which pattern could have been used to create the sequence?



20, –40, 80, –160, 320


Multiply the previous term by –2

Divide the previous term by 2

Subtract 60 from the previous term.

Add –60 to the previous term.

1 answer

If this is a multiple choice question, can't you just test each?

e.g. for (A): -160 x -2 = 320
Therefore, the answer is "multiply the previous term by -2"

To check that the rest are incorrect:
for (B): -160 /2 ≠ 320
for (C): -160 - 60 ≠ 320
for (D): -160 + -60 ≠ 320

NOTE: ≠ means 'not equal to'
Similar Questions
  1. 1 of 71 of 7 ItemsQuestion Multiple Choice Describe a pattern in each sequence. What are the next two terms of each sequence?
    1. answers icon 5 answers
  2. Which answer describes the pattern in this sequence?1,2,1/2,1/4, add 1/2 add , 1 half subtract 1 multiply by 2 multiply by 1/2
    1. answers icon 0 answers
  3. Multiple ChoiceDescribe a pattern in each sequence. What are the next two terms of each sequence? 24, 22, 20, 18... (1 point)
    1. answers icon 1 answer
    1. answers icon 1 answer
more similar questions