Предмет: Информатика, автор: девочка227

Можете пожалуйста объяснить как это решается не (число>60) и (число>30) буду очень благодарна

Ответы

Автор ответа: СтарыйМатематик
0
Не число >60 = число =<60
число =<60 и число >30
союз и - пересечение множеств
пересекаем (-беск;60] и множество (30;+ беск) имеем (30;60]
Ответ: (30;60]
Автор ответа: HIPM
0
НЕ (число > 60) И (число > 30)
(число < 60) И (число > 30)
30 < число < 60 (Так как "И")
число ∈ (30 ; 60)
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