Consider the following statements: S1:ThereexistinfinitesetsA,B,Csuchthat A∩(B∩C)isfinite. S2:
There exist two irrational numbers x and y such that (x+y) is rational.
Which of the following is true about S1andS2 ?
A
OnlyS2iscorrect
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B
NoneofS1andS2iscorrect
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C
BothS1andS2arecorrect
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D
OnlyS1iscorrect
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Solution
The correct option is CBothS1andS2arecorrect S1:
Let A= set of integers
B= set of odd integers
C= set of even integers A∩(B∩C)=ϕandϕisfiniteset.
Therefore, S1 is true.
S2:
Let two irrational number x and y are respectively (1+√2)and(1−√2) sox+y=1+√2+1−√2
=2 which is rational number
Therefore, S2 is true. Since both S1 and S2 are true, option (c) is true.