Problem

Problem

1. Find the first term of the sequence 2,6,18,54,…2, 6, 18, 54, \dots which exceeds 10 000. 2. Find the first term of the sequence 4,43,12,123,…4, 4\sqrt{3}, 12, 12\sqrt{3}, \dots which exceeds 4800. 3. Find the first term of the sequence 12,6,3,1.5,…12, 6, 3, 1.5, \dots which is less than 0.0001. 4. Find the first term of the sequence 5,−152,454,−1358,…5, -\frac{15}{2}, \frac{45}{4}, -\frac{135}{8}, \dots which is less than −100-100.

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