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If I = $\frac{3}{4}+\frac{5}{6}$, II=$3\div\left[(4\div 5)\div 6\right]$ III =$\left[3\div(4\div 5)\div 6\right]$ IV = $3\div 4 (5\div 6)$ ,then1). I and II are equal2). I and IV are equal3). I and III are equal4). All are equal |
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