Which one of the following orders represent the correct sequence of the increasing basic nature ...

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Which one of the following orders represent the correct sequence of the increasing basic nature of the given oxides?
(1) \( \mathrm{Al}_{2} \mathrm{O}_{3}\mathrm{MgO}\mathrm{Na}_{2} \mathrm{O}\mathrm{K}_{2} \mathrm{O} \)
(2) \( \mathrm{MgO}\mathrm{K}_{2} \mathrm{O}\mathrm{Al}_{2} \mathrm{O}_{3}\mathrm{Na}_{2} \mathrm{O} \)
(3) \( \mathrm{Na}_{2} \mathrm{O}\mathrm{K}_{2} \mathrm{O}\mathrm{MgO}\mathrm{Al}_{2} \mathrm{O}_{3} \)
(4) \( \mathrm{K}_{2} \mathrm{O}\mathrm{Na}_{2} \mathrm{O}\mathrm{Al}_{2} \mathrm{O}_{3}\mathrm{MgO} \)
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