Question

What is the successor and predecessor of $5990$?

• A. Successor $=5991$
  Predecessor $=5989$
• B. Successor $=5989$
  Predecessor $=5991$
• C. Successor $=5910$
  Predecessor $=5980$

Answer 1

The correct option is A Successor $=5991$

Predecessor $=5989$
We will solve this using a number line.

The number immediately before $5990$ is its predecessor, which in this case is $5989$.

And, the number immediately after $5990$ is its successor, which in this case is $5991$.

We can verify this by:

$5990-1=5989$, this gives us the predecessor.

$5990+1=5991$, this gives us the successor.