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2. Let S = { a,b, { a, } , {}} . Which of the following statements are false ? (i) { a, {}} S

2. LetS={a,b,{a,},{}}. Which of the following statements arefalse?

(i) {a,{}} S

(ii){a,b} S

(iii){a,} S

(iv){a,} S

(v){} S

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