In the following questions, select the related letters/word/number from the given alternatives.
20 : 50 : : 100 : ?
Expression =Â 20 : 50 : : 100 : ?
The pattern followed is = $$n:2.5n$$
Eg = $$20:20\times2.5=20:50$$
Similarly, $$100\times2.5=250$$
=> Ans - (B)
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