(a) The 1st term of a geometric progression is 4 and the 6h term is 128. Determine the 8th and 11th terms. (b) Which term of the series 3, 9, 27,.. is 59049? 1.1 11 (c) Given the following sequence:...

Extracted text: (a) The 1st term of a geometric progression is 4 and the 6h term is 128. Determine the 8th and 11th terms. (b) Which term of the series 3, 9, 27,.. is 59049? 1.1 11 (c) Given the following sequence: 1++++++ 4 5 Identify if the sequence converges or 2 3 diverges (use comparison test). (d) The seventh term of arithmetic progression is 29 and the eleventh term is 54. Determine: (i) The sixteenth term. (ii) The sum of the first 20 terms.