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Sagot :
Answer:
This is a geometric sequence with a common ratio of -1/2
Step-by-step explanation:
Take the second term and divide by the first term
-60/120 = -1/2
Take the third term and divide by the second term
30/-60 = -1/2
Take the fourth term and divide by the third term
-15/30 = -1/2
This is a geometric sequence with a common ratio of -1/2
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