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If operation 'o' is defined as (a o b) = a^3 + b^3, then 4 o (1 o 2) = (A) 729 (B) 793 (C) 783 (D) 792

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If operation 'o' is defined as (a o b) = \(a ^ 3 + b ^ 3,\) then 4 o (1 o 2) =

(A) 729

(B) 793

(C) 783

(D) 792

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2 Answers

+1 vote
by (57.1k points)
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Best answer

Correct option is (B) 793

\((1 \ o\ 2) = 1^3 + 2^3\)

\(= 1 + 8\)

\(= 9\)

Now,

\((4 \ o \ 9) = 4^3 + 9^3\)

\(= 64 + 729\)

\(= 793\)

+1 vote
by (44.6k points)

Correct option is (B) 793

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