The fourth proportional to (a 2 – ab + b 2 ), (a 3 + b 3 ) and (a-b) is equal to ______

CA Foundation · Quantitative Aptitude · MTP · September 2026
The fourth proportional to (a 2 – ab + b 2 ), (a 3 + b 3 ) and (a-b) is equal to ______
(A) A. a 2 + b 2
(B) B. a 2 -b 2
(C) C. 1
(D) D. 0

Suggested Answer and Working Notes:

Correct Answer: Option (B)

B. a 2 -b 2

Topics: Part-A: Business Mathematics

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