Which of the following sets are empty sets?
i) `A={`x: `x^2-3=0`. and x is rational` }`
ii) `B={x: `x is an even prime number`}`
iii) `C={x: 4 lt x lt 5, x in N}`
iv) `D={x: x^2=25` and 'x' is an odd integer.}

Classify the following sets {x: x^2-2=0, x is rational}

State which of the following sets are finite or infinite {x:x in N and x^2 -3x+2=0}

State which of the following sets are finite and which are infinite: i) A={x: x in Z and x^2-5 x+6=0'} ii) 'B={x: x in Z' and 'x^2' is even} iii) 'C={x: x in Z.' and 'x^2=36'} iv) 'D={x .: x in Z' and 'xgt-10}

Which of the following is a statement? (i) x+2=9 (ii) 6 has three prime factors (iii) x^(2)+5 x+6=0

Which of the following sets are null sets. (i) The set 'A' of all prime númbers lying between 15 and 19. (ii) 'A= {x: x lt 5, x gt 6'} (iii) 'A= {x: x^2=16, x in N'} (iv) 'A={x: |x|<-4, x in N}'

Classify the following sets A={x: x^2-9x+20=0 ,x is real} and B={4,5}.

Solve 5x-3 lt7 , when x is an integer

List all the elements of the following sets : (i) A={x: x is an odd natural number} (ii) 'B={x , x. is an integer, -1/2 lt x lt 9/2 } (iii) 'C={x: x.'.is an integer, x^2 le 4 } (iv) D=[x: x is a letter in the word 'LOYAL" } (v) E= {x: x is a month of a year not having 31 days} (vi) F= {x: x is a consonant in the English alphabet which precedes k}.

Describe the following sets by roster method: (i) {x: x^2+5 x+6=0, x in N} (ii) {x: x^2+6 x+8=0, x in Z} (iii) {x: 4 x+7 lt25, x in N} (iv) {x , x^3+1=0, x in N} (v) the set of all lettersin the word TRIGONOMETRY.

Which of the following pairs of sets are disjoint {x:x is an even integer} and {x:x is an odd integer}