If $$u : v = v : w$$, then what is the value of $$u^4 : v^4$$ ?
Given = $$u:v=v:w$$
=> $$v^2=uw$$ --------------(i)
To find =Â $$u^4 : v^4$$
Substituting value from equation (i), we get :
=Â $$u^4 : (uw)^2$$
= $$u^2:w^2$$
=> Ans - (B)
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