Mathematics · Mathematical Operations
यदि '+' और '−' को आपस में बदल दिया जाए और '×' और '÷' को आपस में बदल दिया जाए, तो निम्नलिखित समीकरण में प्रश्नवाचक चिह्न (?) के स्थान पर क्या आएगा? 6 ÷ 4 + 10 × 5 − 5 = ? + 15
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42
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