MCQ
$A = \{ x:x \ne x\} $ represents
- A$\{0\}$
- ✓$\{\}$
- C$\{1\}$
- D$\{x\}$
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$ +60(1+x)^{60}, x \neq 0 \text {, and }(60)^2 S(60)=a(b)^b+b$ where $a, b N$, then $(a+b)$ equal to...............