Write the successors and predecessors of:
7,42,689

Answer

To find the successors and predecessors of the number 7,42,689, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Successor**: The successor of a number is the number that comes immediately after it. To find the successor of 7,42,689, we simply add 1 to it.

\[ \text{Successor of } 7,42,689 = 7,42,689 + 1 \]

2. **Calculating the Successor**: Now, let's perform the addition.

\[ 7,42,689 + 1 = 7,42,690 \]

Therefore, the successor of 7,42,689 is **7,42,690**.

3. **Understanding Predecessor**: The predecessor of a number is the number that comes immediately before it. To find the predecessor of 7,42,689, we subtract 1 from it.

\[ \text{Predecessor of } 7,42,689 = 7,42,689 - 1 \]

4. **Calculating the Predecessor**: Now, let's perform the subtraction.

\[ 7,42,689 - 1 = 7,42,688 \]

Therefore, the predecessor of 7,42,689 is **7,42,688**.

### Final Answers:
- Successor of 7,42,689: **7,42,690**
- Predecessor of 7,42,689: **7,42,688**