In each of these questions a number series is given. In each series only one…

Concept

In a “find the wrong number” series, first identify the single arithmetic rule that the differences between consecutive terms follow. Here the rule is that each term is obtained by adding a growing increment that doubles at every step — i.e. the additions form a geometric chain (+4, +8, +16, +32, …), each twice the previous one.

Application

Start from the first term, 304, and apply the doubling-increment rule one step at a time:

1. 304 + 4 = 308

2. 308 + 8 = 316

3. 316 + 16 = 332

4. 332 + 32 = 364

5. 364 + 64 = 428

6. 428 + 128 = 556

So the series that perfectly obeys the rule is 304, 308, 316, 332, 364, 428, 556.

Cross-check

Compare this rule-consistent series with the printed one (304, 300, 316, 332, 364, 428, 556). Every term matches except the second: the rule demands 308, but the series prints 300. Hence the term 300 breaks the doubling-increment pattern and is the wrong number; replacing it with 308 restores the +4, +8, +16, +32, +64, +128 chain.