General Studies · Mathematical Operations
यदि '+' और '÷' को आपस में बदल दिया जाए, और '×' तथा '-' को आपस में बदल दिया जाए, तो निम्नलिखित समीकरण में '?' के स्थान पर क्या आएगा? 10 ÷ 2 - 6 × 7 + 1 = ?
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