Q. 245.0( 2 Votes )

The negation of the statement

“Plants take in CO2 and give out O2” is
A. Plants do not take in CO2 and do not give out O2.

B. Plants do not take in CO2 or do not give out O2.

C. Plants take in CO2 and do not give out O2.

D. Plants take in CO2 or do not give out O2.

Answer :

If the statement is p then its negation is ~p, it means if p is true then ~p is false and vice versa.

p: Plants take in CO2 and give out O2


q: Plants take in CO2


~q: Plants do not take in CO2


r: Plants give out O2


~r: Plants do not give out O2


Now,


~(qr)=~q V ~r


Hence, Plants do not take in CO2 or do not give out O2.

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