Select the related word/letters/number from the given alternatives.
545 : 196 :: 173 : ?
Expression =Â 545 : 196 :: 173 : ?
The second number is the square of the sum of digits of first number.
Eg :- $$(5+4+5)^2=(14)^2=196$$
Similarly, $$(1+7+3)^2=(11)^2=121$$
=> Ans - (B)
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