What are the solutions to these logical reasoning questions?

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don.christian
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hi i am havin problems with the attached qns. can anyone solve them? pls state the answer n how u derive at them alos. thanks
 
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yap, questions seem hard enough. but i think qns 4 is c) (a subtraction and addition of the c. figure to get to the rect) qns 7 seems to be b).