Сравни выражения

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1. \(60 : 10\) [ ] \(90 : 10\)
2. \(10 \cdot 2\) [ ] \(7 \cdot 10\)
3. \(90 : 10\) [ ] \(20 : 10\)
4. \(60 : 10\) [ ] \(70 : 7\)