Mathematics · Mathematical Operations
यदि '−' और '÷' 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? 8 + 63 − 7 × 7 ÷ 9 = ?
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