Question:
Find the missing number:
1, 2, 6, 24, ?, 720
Find the missing number:
1, 2, 6, 24, ?, 720
1, 2, 6, 24, ?, 720
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Factorial sequences or multiplication by increasing integers is common in series that grow very fast.
Updated On: Jun 26, 2026
- 100
- 120
- 150
- 130
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The Correct Option is B
Solution and Explanation
Step 1: Concept
Identify the pattern in term multiplication.
Step 2: Analysis
$1 \times 2 = 2$
$2 \times 3 = 6$
$6 \times 4 = 24$
Terms are multiplied by consecutive integers (n!).
Step 3: Calculation
$24 \times 5 = 120$.
Step 4: Verification
$120 \times 6 = 720$ (matches the sequence). Final Answer: (2)
Identify the pattern in term multiplication.
Step 2: Analysis
$1 \times 2 = 2$
$2 \times 3 = 6$
$6 \times 4 = 24$
Terms are multiplied by consecutive integers (n!).
Step 3: Calculation
$24 \times 5 = 120$.
Step 4: Verification
$120 \times 6 = 720$ (matches the sequence). Final Answer: (2)
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