1. What is the sum of the first six terms of the geometric sequence 32, 64, 128, ...? 2. Find the sum of the terms of a geometric sequence where the first term is 1, the last term is 16 807 and the common ratio is 7. 3. Determine the number of terms in the geometric sequence 41= -2, r = 5, Sn = -62 4. What is the sum of the first 100 terms of the geometric sequence -6, 6, -6, 6, -6, ...? 5. What is the sum of the first 95 terms of the geometric sequence 6, -6, 6, -6, 6, ...