1.

`{:("column A" , "column B"),((a) x:5 : : 2:3, (p)6/5),((b)2:x: : 4 :3, (q) 15/2),((c) 2:5 : :x:3,(r) 10/3),((d)2:5 ::3:x , (s)3/2):}`

Answer» Correct Answer - A::B::C::D
x : 5 : : 2 : 3
` x/5 = 2/3`
` Rightarrow x= 10/3 to ( r) `
(b) 2 : x : : 4 : 3
` Rightarrow 2/x = 4/3 `
` Rightarrow x = 2 xx 3/4 = 6/4 = 3/2 to (s)`
( c) 2 :5 : : 3 : x
`2/5 = 3/x`
` Rightarrow x = 3 xx 5/2`
` x = 15/2 to (q)`
Therefore, the correct mathch is :
` a to r, b to s, c to p, d to q `


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