What will come in place of the question mark (?) in the following number series.
113 120 106 127 99 ?

Options

A. 152
B. 142
C. 134
D. 148

Answer

To find the missing number in the series 113, 120, 106, 127, 99, ?, we will analyze the pattern of differences between the numbers.

1. **Identify the series**: The given series is:
- 113
- 120
- 106
- 127
- 99
- ?

2. **Calculate the differences**:
- From 113 to 120: \(120 - 113 = 7\) (add 7)
- From 120 to 106: \(106 - 120 = -14\) (subtract 14)
- From 106 to 127: \(127 - 106 = 21\) (add 21)
- From 127 to 99: \(99 - 127 = -28\) (subtract 28)

3. **List the differences**:
- The differences are: +7, -14, +21, -28

4. **Identify the pattern in the differences**:
- The pattern of differences is alternating between addition and subtraction:
- First difference: +7
- Second difference: -14
- Third difference: +21
- Fourth difference: -28
- The absolute values of the differences are increasing by 7 each time: 7, 14, 21, 28.

5. **Predict the next difference**:
- Following the pattern, the next difference should be +35 (since 28 + 7 = 35).

6. **Calculate the missing number**:
- The last number we have is 99. We will add the next difference:
- \(99 + 35 = 134\)

7. **Conclusion**:
- Therefore, the missing number in the series is **134**.

**Final Answer**: The number that comes in place of the question mark (?) is **134**.