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मान लीजिए $A = \left\{ \theta \in \left( -\frac{\pi}{2}, \pi \right) : \frac{3 + 2i \sin \theta}{1 - 2i \sin \theta} \text{ शुद्ध काल्पनिक है} \right\}$। तो $A$ के अवयवों का योग है

$\sqrt{-2} \times \sqrt{-3} = $

निम्नलिखित में से कौन सा कथन सत्य है?

$\frac{1 - 2i}{2 + i} + \frac{4 - i}{3 + 2i} = $

$\left(\frac{1-i}{1+i}\right)^{2022}+\left(\frac{1+i}{1-i}\right)^{2021}=$

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