³√?/9261 = 11/21
Correct answer: B. 1331
- A. 121
- B. 1331
- C. 14641
- D. 2662
Explanation
Since 9261 = 21^3, the equation can be written as cube root of ? divided by 21^3 equals 11/21. Cubing both sides gives ?/21^3 = 11^3/21^3, so ? = 11^3 = 1331. The likely trap is 121, which comes from squaring 11 instead of cubing it.
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