Question

What is the sum of the predecessor and successor of 99?

• A. 100
• B. 197
• C. 198
• D. 199

Answer 1

The correct option is C 198

The number that comes just before a particular number is called its predecessor.
Subtract 1 from the number to find its predecessor $\Rightarrow$ 99 - 1 = 98

The number which comes immediately after a particular number is called its successor.
Add 1 to the number to find its successor $\Rightarrow$ 99 + 1 = 100



Thus, the predecessor of 99 is 98 and the successor of 99 is 100.

Sum = 98 + 100 = 198