123, 358, 718, 628, 528, 314

Options

A. 358
B. 718
C. 628
D. 528

Explanation

To solve the problem, we need to identify the pattern in the given series of numbers: 123, 358, 718, 628, 528, 314.

### Step-by-Step Solution:

1. **Identify the Pattern**:
- Look at the first number: 123. The digits are 1, 2, and 3.
- Check if the sum of the first two digits equals the third digit:
- 1 + 2 = 3 (This holds true).

2. **Check the Next Number**:
- The next number is 358. The digits are 3, 5, and 8.
- Check the sum:
- 3 + 5 = 8 (This holds true).

3. **Continue with the Next Number**:
- The next number is 718. The digits are 7, 1, and 8.
- Check the sum:
- 7 + 1 = 8 (This holds true).

4. **Check the Fourth Number**:
- The next number is 628. The digits are 6, 2, and 8.
- Check the sum:
- 6 + 2 = 8 (This holds true).

5. **Check the Fifth Number**:
- The next number is 528. The digits are 5, 2, and 8.
- Check the sum:
- 5 + 2 = 7 (This does NOT hold true; it should be 7, not 8).

6. **Identify the Incorrect Number**:
- Since the sum of the first two digits (5 + 2) should equal the third digit (7), the number 528 is incorrect.
- The correct number should be 527.

7. **Final Number Check**:
- The last number is 314. The digits are 3, 1, and 4.
- Check the sum:
- 3 + 1 = 4 (This holds true).

### Conclusion:
The incorrect number in the series is **528**, and it should be **527**.