What will come in place of the question mark (?) in the following number series?
`40280625" "732375" "16275" "465" "18.6" "1.24" "?`

Options

A. 0.248
B. 0.336
C. 0.424
D. 0.512

Answer

To find the missing term in the series `40280625`, `732375`, `16275`, `465`, `18.6`, `1.24`, `?`, we need to identify the pattern in the series. Let's break it down step by step.

### Step 1: Identify the relationship between the numbers
We will look at how each number relates to the next.

1. **From 40280625 to 732375**:
- Divide 40280625 by 55:
\[ 40280625 \div 55 = 732375 \]

2. **From 732375 to 16275**:
- Divide 732375 by 45:
\[ 732375 \div 45 = 16275 \]

3. **From 16275 to 465**:
- Divide 16275 by 35:
\[ 16275 \div 35 = 465 \]

4. **From 465 to 18.6**:
- Divide 465 by 25:
\[ 465 \div 25 = 18.6 \]

5. **From 18.6 to 1.24**:
- Divide 18.6 by 15:
\[ 18.6 \div 15 = 1.24 \]

### Step 2: Determine the next division
Now we need to find the next term after 1.24. Following the observed pattern, we will divide 1.24 by 5:

\[ 1.24 \div 5 = 0.248 \]

### Conclusion
Thus, the missing term in the series is **0.248**.

### Final Answer
The answer is **0.248**.

---