What is the next term in the following sequence: 3, -15, 75, -375…?
What is the rule for the following sequence: 8, 4, 2, 1…?

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1. 1875
2. Dividing by 2.

for the first one i think it is
an = a1 * (1/2)(n-1), a1 = 8
btw

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