Find the value of (?) in the following number series.
`80," "66," "85," "61," "90," "?`

Options

A. A)50
B. B)56
C. C)64
D. D)60

Answer

To find the value of (?) in the number series: 80, 66, 85, 61, 90, ?, we can analyze the pattern in the series step by step.

### Step 1: Identify the pattern in the series
We can separate the series into two alternating sequences:
1. The first sequence consists of the 1st, 3rd, and 5th terms: 80, 85, 90
2. The second sequence consists of the 2nd, 4th, and 6th terms: 66, 61, ?

### Step 2: Analyze the first sequence (80, 85, 90)
- From 80 to 85, we add 5.
- From 85 to 90, we again add 5.
- Thus, the pattern in this sequence is that we are adding 5 each time.

### Step 3: Analyze the second sequence (66, 61, ?)
- From 66 to 61, we subtract 5.
- To find the next term, we will subtract 5 from 61.
- So, 61 - 5 = 56.

### Step 4: Conclusion
The missing term (?) in the series is 56.

### Final Answer
Therefore, the value of (?) is **56**.

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