30
28
27
17
Answer is Right!
Answer is Wrong!
The correct answer is $\boxed{\text{B}}$.
The series is $1, 2, 5, 10, 17, 28$. The next number in the series is found by adding the previous two numbers. For
example, $17 + 28 = 45$. Therefore, the missing number is $\boxed{28}$.Option A, $30$,
is incorrect because it is not the sum of the previous two numbers.Option C, $27$, is incorrect because it is not the sum of the previous two numbers.
Option D, $17$, is incorrect because it is already in the series.