Question

Is this sequence Arithmetic or Geometric -1, 1, 1, 1

Answer 1

Neither Arithmetic nor Geometric.

1) Examining that given sequence:

`-1,1,1,1`

2) Let's try to find a Common difference:

1-1=0 Fourth term - third term

1-1=0 Third - Second

1-(-1) =2

Not an Arithmetic Sequence, because there is no common difference

Checking for a Common Ratio:

1 ÷ 1 = 1 Fourth term ÷ third term

1 ÷ 1 = 1 Third ÷Second

1 ÷ -1 = -1 Second ÷ First

Not a Geometric Sequence, because there is no common ration

3) Hence, this is neither Arithmetic nor Geometric.

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