5 Ex Well Defined Set

5 ex well defined set

 

Answer:

Well Defined Sets

• {odd numbers between 66 and 74}
• {even numbers between 81 to 89}
• {subjects in grade 4}
• {types of color schemes}
• {consonants in the English Alphabet}
• {months in a year ending in -ber}
• {days in a week that starts with T}
• {primary colors}
• {tertiary colors}
• {kingdoms of life/classification}
• {planets in the solar system}
• {climate zones of the earth}
• {types of weather}
• {phases in the cell cycle}
• {constellations}
• {astrological signs}