What will come in the place of question mark (?) in the following series questions?
121,?,169,196,225,256

Options

A. A)148
B. B)144
C. C)140
D. D)136

Answer

To find the missing number in the series: 121, ?, 169, 196, 225, 256, we can analyze the given numbers to identify a pattern.

### Step-by-Step Solution:

1. **Identify the known terms**: The series is 121, ?, 169, 196, 225, 256. The known terms are 121, 169, 196, 225, and 256.

2. **Recognize the perfect squares**:
- 121 = 11²
- 169 = 13²
- 196 = 14²
- 225 = 15²
- 256 = 16²

3. **Determine the missing term**:
- The pattern shows that these numbers are perfect squares of consecutive integers starting from 11.
- The sequence of squares is: 11², ?, 13², 14², 15², 16².
- The missing term should be the square of the next integer after 11, which is 12.

4. **Calculate the missing term**:
- 12² = 144.

5. **Final answer**: The missing number in the series is 144.

### Conclusion:
The complete series is: 121, 144, 169, 196, 225, 256. Thus, the answer to the question is 144.