Mathematics · Mathematical Operations
यदि '+' और 'x' को आपस में बदल दिया जाए तथा '÷' और '-' को आपस में बदल दिया जाए, तो निम्नलिखित समीकरण में प्रश्नवाचक चिह्न (?) के स्थान पर क्या आएगा? 18 - 6 + 3 × 20 ÷ 9 = ?
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