Answer:To determine the pattern in the sequence 1.7, 11, 18, 29, 27, let's examine the differences between consecutive terms ¹:- 11 - 1.7 = 9.3- 18 - 11 = 7- 29 - 18 = 11- 27 - 29 = -2The sequence doesn't follow a simple arithmetic or geometric progression. Given the irregularity and the presence of 1.7, which doesn't fit neatly with the rest of the numbers, it's challenging to pinpoint the exact nature of the sequence without more context.However, if we consider a similar sequence 7, 11, 18, 29, 47, the pattern appears to be formed by adding the previous two terms to get the next term, similar to a Fibonacci sequence ²:- 7 + 11 = 18- 11 + 18 = 29- 18 + 29 = 47- 29 + 47 = 76If the sequence 1.7, 11, 18, 29, 27 followed a similar pattern, we would expect the next term to be the sum of 29 and 27, which is 56. Nevertheless, without a clear pattern or additional information, it's difficult to provide a definitive answer.Given the provided sequences and patterns, more context or clarification would be necessary to accurately determine the next term in the sequence 1.7, 11, 18, 29, 27.