Question

Find the odd one out: \(5,\,10,\,20,\,40,\,100,\,150,\,200\).

• A. \(40\)
• B. \(100\)
• C. \(150\)
• D. \(200\)

Hint:

When finding an odd term, check patterns such as multiplication, addition differences, or powers. The number that breaks the rule is the odd one.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
We are given a sequence of numbers and must identify which number violates the established pattern of the series.
Step 2: Key Formula or Approach:
Check for arithmetic differences or geometric ratios between consecutive terms to find the underlying rule.
Step 3: Detailed Explanation:
Looking at the start of the series:
\(5 \times 2 = 10\)
\(10 \times 2 = 20\)
\(20 \times 2 = 40\)
The rule appears to be multiplying by \(2\). If we continue:
\(40 \times 2 = 80\)
However, the sequence lists \(100\) instead of \(80\).
Checking the logic for later terms:
If the term was \(80\), the pattern might shift, but \(100\) clearly does not fit the simple doubling rule that governs the first four terms.
Step 4: Final Answer:
The odd one out is \(100\).