Exercise 1.2, NCERT Class 11 Maths Chapter 1 (Sets)

NCERT Class 11 Maths Chapter 1 (Sets) Exercise 1.2 Hindi — एनसीईआरटी कक्षा 11 गणित अध्याय 1 (समुच्चय) English — NCERT Class 11 Maths Chapter 1 (Sets) Spanish — NCERT Matemáticas de 11.º grado, Capítulo 1 (Conjuntos) Portuguese — NCERT Matemática do 11º ano, Capítulo 1 (Conjuntos) Bengali — এনসিইআরটি একাদশ শ্রেণি গণিত অধ্যায় 1 (সেট) Urdu — این سی ای آر ٹی جماعت 11 ریاضی باب 1 (مجموعے) Arabic — NCERT الصف الحادي عشر رياضيات الفصل 1 (المجموعات) French — NCERT Mathématiques de classe 11, chapitre 1 (Ensembles) German — NCERT Mathematik Klasse 11, Kapitel 1 (Mengen) Russian — NCERT 11 класс математика, глава 1 (Множества) Japanese — NCERT 11年生 数学 第1章（集合） Korean — NCERT 11학년 수학 1장 (집합) Turkish — NCERT 11. Sınıf Matematik Bölüm 1 (Kümeler) Indonesian — NCERT Matematika Kelas 11 Bab 1 (Himpunan) Vietnamese — NCERT Toán lớp 11, Chương 1 (Tập hợp) Thai — NCERT คณิตศาสตร์ ม.11 บทที่ 1 (เซต) Persian — NCERT ریاضی پایه یازدهم، فصل 1 (مجموعه‌ها) Marathi — एनसीईआरटी इयत्ता 11 गणित धडा 1 (समुच्चय) Tamil — NCERT 11ஆம் வகுப்பு கணிதம் அத்தியாயம் 1 (தொகுப்புகள்) Telugu — NCERT 11వ తరగతి గణితం అధ్యాయం 1 (సమూహాలు) Gujarati — NCERT ધોરણ 11 ગણિત અધ્યાય 1 (સમુચ્ચય) Punjabi — NCERT ਕਲਾਸ 11 ਗਣਿਤ ਅਧਿਆਇ 1 (ਸਮੂਹ) Malayalam — NCERT ക്ലാസ് 11 ഗണിതം അദ്ധ്യായം 1 (സമുച്ചയങ്ങൾ) Italian — NCERT Matematica classe 11, capitolo 1 (Insiemi) Dutch — NCERT Wiskunde klas 11, hoofdstuk 1 (Verzamelingen) EXERCISE 1.2 1. Which of the following are examples of the null set (i) Set of odd natural numbers divisible by 2 (ii) Set of even prime numbers (iii){ x : x is a natural numbers, x is less than 5 and x is greater than 7 } (iv) { y : y is a point common to any two parallel lines} 2. Which of the following sets are finite or infinite (i) The set of months of a year (ii) {1, 2, 3, . . .} (iii) {1, 2, 3, . . .99, 100} (iv) The set of positive integers greater than 100 (v) The set of prime numbers less than 99 3. State whether each of the following set is finite or infinite: (i) The set of lines which are parallel to the x-axis (ii) The set of letters in the English alphabet (iii) The set of numbers which are multiple of 5 (iv) The set of animals living on the earth (v) The set of circles passing through the origin (0,0) 4. In the following, state whether A = B or not: (i) A = { a, b, c, d } B = { d, c, b, a } (ii) A = { 4, 8, 12, 16 } B = { 8, 4, 16, 18} (iii) A = {2, 4, 6, 8, 10} B = { x : x is positive even integer and x is less than equal to 10} (iv) A = { x : x is a multiple of 10}, B = { 10, 15, 20, 25, 30, . . . } 5. Are the following pair of sets equal ? Give reasons.(i) A = {2, 3}, B = {x : x is solution of x² + 5x + 6 = 0} (ii) A = { x : x is a letter in the word FOLLOW} B = { y : y is a letter in the word WOLF} 6. From the sets given below, select equal sets : A = { 2, 4, 8, 12}, B = { 1, 2, 3, 4}, C = { 4, 8, 12, 14}, D = { 3, 1, 4, 2}, E = {–1, 1}, F = { 0, a}, G = {1, –1}, H = { 0, 1}.