Number series – constant decrement of 121 (11^2): 796, 675, 554, 433, ? Continue subtracting 121 each time.
Verbal Reasoning
Number Series
Difficulty: Easy
Choose an option
Answer
Correct Answer: 312
Explanation
Introduction / Context:A fixed subtraction pattern, especially by a notable square like 121 (=11^2), is common in reasoning sets. Confirm the fixed drop and extend once more.
Given Data / Assumptions:
- 796→675 (−121), 675→554 (−121), 554→433 (−121).
Concept / Approach:Apply the same subtraction again.
Step-by-Step Solution:
433 − 121 = 312.Verification / Alternative check:Adding back 121 from 312 returns to 433, confirming consistency.
Why Other Options Are Wrong:
231, 213, 512 do not equal 433 − 121 and would break the uniform decrement.Common Pitfalls:Searching for changing differences where a single constant drop fits perfectly.
Final Answer:312