Select the related word/letters/numbers from the given alternatives:
85 : 42 :: 139 : ?
Expression =Â 85 : 42 :: 139 : ?
The pattern followed is = $$2n+1:n$$
Eg = $$2(42)+1:42=85:42$$
Similarly, $$2n+1=139$$
=> $$2n=139-1=138$$
=> $$n=\frac{138}{2}=69$$
=> Ans - (B)
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