What will come in place of question mark(?) in the given number series?
24 12 12 18 36 ?

Options

A. 92
B. 90
C. 94.5
D. 81.5

Answer

To solve the number series: 24, 12, 12, 18, 36, ?, we need to identify the pattern in the series.

### Step-by-Step Solution:

1. **Identify the first operation**:
- From 24 to 12:
- We can see that 24 is multiplied by 0.5 (24 * 0.5 = 12).

2. **Identify the second operation**:
- From 12 to 12:
- Here, 12 is multiplied by 1 (12 * 1 = 12).

3. **Identify the third operation**:
- From 12 to 18:
- We can see that 12 is multiplied by 1.5 (12 * 1.5 = 18).

4. **Identify the fourth operation**:
- From 18 to 36:
- Here, 18 is multiplied by 2 (18 * 2 = 36).

5. **Identify the pattern in multipliers**:
- The multipliers are: 0.5, 1, 1.5, 2.
- It appears that the multipliers increase by 0.5 each time.

6. **Determine the next multiplier**:
- Following the pattern, the next multiplier after 2 should be 2.5.

7. **Calculate the next number**:
- Now, we multiply 36 by 2.5:
- 36 * 2.5 = 90.

Thus, the number that will come in place of the question mark (?) is **90**.

### Final Answer:
The answer is **90**.