Mathematics · Mathematical Operations
यदि '+' और '-' को आपस में बदल दिया जाए, तथा '×' और '/' को आपस में बदल दिया जाए, तो निम्नलिखित समीकरण में प्रश्न चिह्न (?) के स्थान पर क्या आएगा? 692 - 438 / 1488 × 372 + 257 / 621 × 69 = ?
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