What will come in place of question mark(?) in the given number series.
145 158 119 184 93 ?

Options

A. 378
B. 290
C. 210
D. 280

Answer

To find the missing number in the series 145, 158, 119, 184, 93, ?, we need to identify the pattern in the differences between the numbers.

### Step-by-Step Solution:

1. **Identify the first difference**:
- From 145 to 158:
\[ 158 - 145 = 13 \]

2. **Identify the second difference**:
- From 158 to 119:
\[ 119 - 158 = -39 \]

3. **Identify the third difference**:
- From 119 to 184:
\[ 184 - 119 = 65 \]

4. **Identify the fourth difference**:
- From 184 to 93:
\[ 93 - 184 = -91 \]

5. **List the differences**:
- The differences we have are:
\[ +13, -39, +65, -91 \]

6. **Identify the pattern in the differences**:
- The pattern alternates between addition and subtraction. The absolute values of the differences are:
\[ 13, 39, 65, 91 \]
- The differences in absolute values are:
\[ 39 - 13 = 26, \quad 65 - 39 = 26, \quad 91 - 65 = 26 \]
- This shows that the differences increase by 26 each time.

7. **Calculate the next difference**:
- The next difference should be:
\[ 91 + 26 = 117 \]
- Since the last operation was subtraction, this time we will add:
\[ 93 + 117 = 210 \]

8. **Conclusion**:
- Therefore, the missing number in the series is:
\[ \boxed{210} \]