1) 0 less than (c-a)/(d-b)

2) ((ad)/(bc))^2 less than (ad)/(bc)

I got trapped by first statement,

it says a+d less than c+b, so I came to conclusion that (c*b) must be grater than (a*d).....

**But I am wrong..**

The number I choose made me to come to conclusion.I failed to choose the value of

a =4,b=6,c=2,d=3.

So, Please help me how should I choose numbers, not only for this question, for all types of question. If any where some one wrote about choosing numbers topic pls share with me.

Thanks in advance:)

Source OG13: Q:92

For others who want to try

OA is B