NCERT Exercise 1.5 Q3 - Sets
Question: With N as the universal set, find the complements of: (i) even natural numbers; (ii) odd natural numbers; (iii) positive multiples of 3; (iv) prime natural numbers; (v) natural numbers divisible by 3 and 5; (vi) perfect squares; (vii) perfect cubes; (viii) {x : x+5=8}; (ix) {x : 2x+5=9}; (x) {x : x >= 7}; (xi) {x : 2x+1>10}.
Answer: Respectively: odd natural numbers; even natural numbers; numbers not divisible by 3; non-prime natural numbers including 1; numbers not divisible by both 3 and 5; non-squares; non-cubes; N-{3}; N-{...
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