Question:
Find the missing number:
2, 6, 12, 20, ___, 42
Find the missing number:
2, 6, 12, 20, ___, 42
2, 6, 12, 20, ___, 42
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Check for constant or pattern-based differences between consecutive numbers in a series.
Updated On: Jun 26, 2026
- 26
- 30
- 32
- 36
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The Correct Option is B
Solution and Explanation
Step 1: Concept
Identifying the logic of the number series by looking at the differences between consecutive terms.
Step 2: Analysis
$2 + 4 = 6$
$6 + 6 = 12$
$12 + 8 = 20$
The difference is increasing by 2 each time (+4, +6, +8...).
Step 3: Calculation
The next difference should be $8 + 2 = 10$.
$20 + 10 = 30$.
Step 4: Verification
The following difference should be $10 + 2 = 12$.
$30 + 12 = 42$ (matches the sequence). Final Answer: (2)
Identifying the logic of the number series by looking at the differences between consecutive terms.
Step 2: Analysis
$2 + 4 = 6$
$6 + 6 = 12$
$12 + 8 = 20$
The difference is increasing by 2 each time (+4, +6, +8...).
Step 3: Calculation
The next difference should be $8 + 2 = 10$.
$20 + 10 = 30$.
Step 4: Verification
The following difference should be $10 + 2 = 12$.
$30 + 12 = 42$ (matches the sequence). Final Answer: (2)
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