In the following question below are given three statements followed by three conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. All Plastic are Wood. II. Some Wood are Brown. III. Some Brown are Black. Conclusions: I. No Plastic is a Brown. II. Some Black are Plastic. III. Some Wood are Black. Correct Answer None follows Consider the following least possible Venn diagram, [ alt="RRB OA MFT6 Neha 3 Aug 2018 40q hindi (R) (Repaired) images Q30" src="//storage.googleapis.com/tb-img/production/18/08/RRB_OA_MFT6_Neha_3%20Aug%202018_40q_hindi%20%28R%29%20%28Repaired%29_images_Q30.PNG" style="height:131px; width:240px"> Conclusions: I. No Plastic is a Brown → False (It is possible but not definite). II. Some Black are Plastic → False (It is possible but not definite). III. Some Wood are Black → False (It is possible but not definite). Hence, none conclusion follows.