Which of the following are examples of null set?
(i) `A ={"x:x is root of equation x + 3 =0 and "x in N} `
(ii) `B ={x:x in Z,9x -8=0}`
C={x:x is letter of the word MAKE}

Which of the following are examples of the null set? (I) A= {x: x in N and x^(2) lt 0} (ii) B= {x: x in N and x-2=9} (iii) C= {x:x in W and 3x-2=5}

Which of the following are examples of null set? (i) A={x:x is a vowel in English alphabet } (ii) B = {x:x is an even number, 2lt xlt 4} (iii) C ={x: x in W }

Which of the following are examples of null set? (i) A={x:x is a vowel in English alphabet } (ii) B = {x:x is an even number, 2lt xlt 4} (iii) C ={x: x in W }

Which of the following are examples of the singleton set? (i) {x:x in Z, x^2=4} (ii) {x:x in Z, x +5 =0} (iii) {x:x in Z, |x| =1} (iv) {x :x in N, x^2=16} (v) {x:x " is an even prime number "}

Which of the following are examples of the null set ? (i) Set of odd numbers divisible by 2. (ii) Set of even prime numbers. (iii) A={x:x in N,1 lt x le 2} (iv) B={x:x in N, 2x + 3=4} (v) C={x:x " is prime ", 90 lt x lt 96} (vi) D={x:x in N, x^2+1=0} (vii) E=={x:x in W, x+3 le 3} (viii) F={x:x in Q, 1 lt x lt 2 } (ix) G={0}

Which of the sets of the following sets are null sets? Give reasons infavour of your answers: Q={ x:2x+8=0 and x in N }

Which of the following are empty (null) sets ? (i) [x:xlt5andxgt7,x inN} (ii) {x:x^(2)=25and x is an odd integer} (iii) {x:x^(2)-2=0 and is rational ]

Which of the following is a null set? {x:x in Z and (-1)/(2) lt x lt (9)/(2)} {x:x in N andx-4 le 15} {x:x in N, xlt 5 and x gt 8} {x:x in N and x^(2) lt 40}