1 Answers
Option 3 : Only conclusions I and IV follow
Drawing the Venn diagram,
[ alt="F1 S.Y 18.3.20 Pallavi D9" src="//storage.googleapis.com/tb-img/production/20/04/F1_S.Y_18.3.20_Pallavi_D9.png" style="width: 247px; height: 64px;">
Conclusion 1 : Some diamonds are platinum → True (This is definitely true)
[ alt="F1 S.Y 18.3.20 Pallavi D10" src="//storage.googleapis.com/tb-img/production/20/04/F1_S.Y_18.3.20_Pallavi_D10.png" style="width: 181px; height: 39px;">
Conclusion 2 : Some diamonds are gold → False (This is possible but not definite)
Conclusion 3 : Some silver are gold → False (This is possible but not definite)
Conclusion 4 : Some platinum are diamonds → True (This is definitely true)
[ alt="F1 S.Y 18.3.20 Pallavi D10" src="//storage.googleapis.com/tb-img/production/20/04/F1_S.Y_18.3.20_Pallavi_D10.png" style="width: 181px; height: 39px;">
Hence, “only conclusion 1 and conclusion 4” follow.