To find the wrong number in the sequence 3, 8, 18, 46, 100, 210, 432, we need to observe the pattern and identify any inconsistencies.
Let's analyze the sequence:
Starting with the first number, 3, we can see that each subsequent number is obtained by multiplying the previous number by 2 and adding a constant term:
3 * 2 + 2 = 8
8 * 2 + 2 = 18
18 * 2 + 2 = 38
38 * 2 + 2 = 78
78 * 2 + 2 = 158
158 * 2 + 2 = 318
However, when we look at the given sequence, we can see that the number 46 does not follow this pattern. According to the pattern, the next number should be 100:
38 * 2 + 2 = 78
78 * 2 + 2 = 158
158 * 2 + 2 = 318
Therefore, the wrong number in the sequence is 46, which means the correct answer is option C.