What will come in the place of question (?) mark in following number series:
`72000," "36000," "12000," "3000," "600," "?`

Options

A. 120
B. 200
C. 300
D. 1001

Answer

To find the missing term in the number series: 72000, 36000, 12000, 3000, 600, ?, we will analyze the pattern of the series step by step.

### Step-by-Step Solution:

1. **Identify the Series**:
The given series is:
- 72000
- 36000
- 12000
- 3000
- 600
- ?

2. **Look for a Pattern**:
We can observe how each term relates to the previous term. Let's calculate the ratio of each term to the one before it:
- From 72000 to 36000:
\[ \frac{72000}{36000} = 2 \]
- From 36000 to 12000:
\[ \frac{36000}{12000} = 3 \]
- From 12000 to 3000:
\[ \frac{12000}{3000} = 4 \]
- From 3000 to 600:
\[ \frac{3000}{600} = 5 \]

3. **Establish the Division Pattern**:
We can see that each term is being divided by an increasing integer:
- 72000 is divided by 2 to get 36000.
- 36000 is divided by 3 to get 12000.
- 12000 is divided by 4 to get 3000.
- 3000 is divided by 5 to get 600.

4. **Predict the Next Term**:
Following this pattern, the next term should be obtained by dividing 600 by 6:
\[ \frac{600}{6} = 100 \]

5. **Conclusion**:
Therefore, the missing term in the series is **100**.

### Final Answer:
The answer is **100**.