Question
In the question below there are three statements
followed by two conclusions I and II. You have to take the three given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the three statements disregarding commonly known facts. Statements: All goggles are spectacles. All spectacles are lenses. Some glasses are goggles. Conclusions: I. Some spectacles are glasses. II. No glass is lens.ΒSolution
Some glasses are goggles (I) + All goggles are spectacles (A) β Some glasses are spectacles (I) β Conversion β Some spectacles are glasses (I). Hence conclusion I does not follow. All goggles are spectacles (A) + All spectacles are lenses (A) β All goggles are lenses (A) + Some glasses are goggles (I) β No conclusion. Hence conclusion II does not follow.