Solution
Expression = 77 : 84 :: 121 : ?
The pattern followed is = $$11n:12n$$, where $$n$$ is a natural number.
Eg = $$11(7):12(7)=77:84$$
Thus, $$11x=121$$
=> $$x=\frac{121}{11}=11$$
$$\therefore$$ Missing term = $$12(11)=132$$
=> Ans - (A)
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