Mathematics · Mathematical Operations
यदि निम्नलिखित समीकरण में '+' और '−' को आपस में बदल दिया जाए तथा '×' और '÷' को आपस में बदल दिया जाए, तो प्रश्नवाचक चिन्ह (?) के स्थान पर क्या मान आएगा? 90 × 6 − 20 ÷ 5 + 30 = ?
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