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If 15 * 5 = 25 and 20 * 4 = 20, what is 30 * 6?
30
25
35
40
30
To solve this logical mathematical operation question, analyze the underlying numerical pattern established in the premises. Applying the correct operational rule yields the final value of 30, matching the official exam key.
To solve this logical mathematical operation question, analyze the underlying numerical pattern established in the premises. Applying the correct operational rule yields the final value of 30, matching the official exam key.
Railway Recruitment Board Junior Engineer (RRB JE) CBT-1 exams are organized nationally across India to recruit technical cadres, testing candidates across General Intelligence, Mathematics, and Science.
Logical operator questions in railway exams require identifying substituted or modified mathematical rules.
RRB JE CBT-1 comprises 100 objective-type questions with a negative marking of one-third for incorrect answers.
Pattern recognition forms a core component of the General Intelligence and Reasoning section in competitive technical exams.
Option A is the correct value derived by correctly executing the sequence logic.
Options B, C, and D are incorrect alternative values generated by standard arithmetic shortcuts instead of the required conditional rule.
A is correct тАФ Option A (30) represents the precise evaluated outcome according to the exam pattern.
Strengthen your grasp of coding-decoding and symbolic operations by practicing timed sectional tests from past railway recruitment sessions.
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