The statements below are followed by conclusions labelled I, II, III and IV. Assuming that the information in the statements is true, even if it appears to be at variance with generally established facts, decide which conclusion(s) logically and definitely follow(s) from the information given in the statements.
Statements:
All Iris are Cornea.
Some Cornea are Lens.
All Lens are Retina.
Conclusions:
I. Some Retina are Cornea.
II. Some Retina are Iris.
III. Some Lens are Iris.
IV. Some Cornea are Retina.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Only I and IV follow.
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The least possible Venn diagram is shown below:
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Conclusions: I. Some Retina are Cornea: True (as some cornea is lens and all lens are retina. So, the part of Retina which is lens is also cornea). II. Some Retina are Iris: False (This is possible but not definite). III. Some Lens are Iris: False (This is possible but not definite). IV. Some Cornea are Retina: True (as some cornea is lens and all lens are retina. So, the part of cornea that is lens is also retina). |
