A geometric sequence has 20 terms, with the first four terms given below. 279, 186, 124, ...
(a) Find r, the common ratio of the sequence. Give your answer as a fraction. [1]
I
(b) Find us, the fifth term of the sequence. Give your answer as a fraction. [1]
(c) Find the smallest term in the sequence that is an integer. [2]
(d) Find Sie, the sum of the first 10 terms of the sequence. Give your answer to one decimal
place. [2]