GMATGuruNY wrote:
The CONTRAPOSITIVE of an if-then statement is always true.
Original statement: If A, then B.
Contrapositive: If not B, then not A.
Example:
Original statement: If John is in New York City, then John is in the United States.
Contrapositive: If John is not in the United States, then John is not in New York City.
A statement and its contrapositive convey the same basicmeaning.
ashutosh_73 wrote:
Please help me to understand why (C) is better than(E).
Quote:
(E) If melatonin were helpful in treating insomnia, then every person with insomnia who took doses of melatonin would appear to be significantly affected byit.
The correct answer to a.CR will not defy common sense.
Contrapositive ofE:
If at least one insomniac who takes melatonin does not appear to be significanly affected byit , then melatonin is not helpful in treatinginsomnia.
This statement defies logic.
Common sense tells us that the lack of a response from ONE insomniac is insufficient to draw a conclusion about ALL insomniacs.
Regardless,
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Statistics : Posted by ashutosh_73 • on 09 Nov 2021, 01:30 • Replies 7 • Views 2836
