Select the missing number from the given series.
1, 8, 27, 64, ?

Options

A. 126
B. 125
C. 141
D. 81

Answer

To solve the problem of finding the missing number in the series 1, 8, 27, 64, ?, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Pattern**:
- Look at the given numbers: 1, 8, 27, 64.
- These numbers appear to be perfect cubes.

2. **Calculate the Cubes**:
- The cube of 1 is \(1^3 = 1\).
- The cube of 2 is \(2^3 = 8\).
- The cube of 3 is \(3^3 = 27\).
- The cube of 4 is \(4^3 = 64\).

3. **Find the Next Number in the Series**:
- Following the pattern, the next number should be the cube of 5.
- Calculate \(5^3\):
\[ 5^3 = 5 \times 5 \times 5 = 125 \]

4. **Conclusion**:
- Therefore, the missing number in the series is 125.

### Final Answer:
The missing number is **125**.