Find the wrong number in each of the following number series.
2 3 7 22 89 448 2677.

Options

A. 7
B. 22
C. 448
D. 89

Answer

To find the wrong number in the series: 2, 3, 7, 22, 89, 448, 2677, we will analyze the pattern in the series step by step.

### Step 1: Identify the pattern
Let's observe how each number relates to the previous one.

1. From 2 to 3:
- \(2 \times 1 + 1 = 3\)

2. From 3 to 7:
- \(3 \times 2 + 1 = 7\)

3. From 7 to 22:
- \(7 \times 3 + 1 = 22\)

4. From 22 to 89:
- \(22 \times 4 + 1 = 89\)

5. From 89 to 448:
- Here we need to check if the pattern holds:
- \(89 \times 5 + 1 = 446\) (not 448)

### Step 2: Identify the wrong number
Since the calculation shows that \(89 \times 5 + 1\) should yield 446, but we have 448 in the series, we can conclude that 448 is the incorrect number.

### Step 3: Verify the next number
Now let's verify the next number in the series using the corrected number (446):
- From 446 to 2677:
- \(446 \times 6 + 1 = 2677\) (this holds true)

### Conclusion
The wrong number in the series is **448**.