2916, 972, 354, 108, 36, 12

Options

A. 2916
B. 972
C. 354
D. 36

Explanation

To solve the problem step by step, we need to analyze the given series: 2916, 972, 354, 108, 36, 12.

### Step 1: Identify the pattern
We will look for a pattern in the series. Notice that the numbers seem to decrease significantly. One common operation that can cause such a decrease is division.

### Step 2: Check if division by 3 works
Let’s divide each number by 3 and see if we can find a consistent pattern:

- **2916 ÷ 3 = 972**
- **972 ÷ 3 = 324**
- **354 ÷ 3 = 118** (this is not consistent with the next number)
- **108 ÷ 3 = 36**
- **36 ÷ 3 = 12**

### Step 3: Compare with the original series
From our calculations, we see that:
- Starting from 2916, dividing by 3 gives us 972, which is correct.
- Dividing 972 by 3 gives us 324, which does not match with 354 in the original series.
- Dividing 108 by 3 gives us 36, which is correct.
- Dividing 36 by 3 gives us 12, which is also correct.

### Step 4: Identify the incorrect number
Since the number that should follow 972 is 324 (not 354), we conclude that 354 is the incorrect number in the series.

### Conclusion
The wrong number in the series is **354**, and it should be **324**.