To find the odd man out in the given sequence 1, 5, 14, 30, 42, 55, 91, we need to analyze the pattern or relationship between the numbers.
Let's examine the differences between consecutive terms:
5 - 1 = 4
14 - 5 = 9
30 - 14 = 16
42 - 30 = 12
55 - 42 = 13
91 - 55 = 36
Looking at the differences, we can observe that they are not following a consistent pattern. However, the difference between 42 and 30 is 12, which is different from the other differences. This suggests that 42 is the odd man out.
Therefore, the correct answer is B) 42.