यदि दी गई दो संख्याओं 6 और 2 को आपस में बदल दिया जाए, तो निम्नलिखित में से कौन सा समीकरण सही नहीं होगा? I. 9 ÷ 2 × 6 + 8 - 4 = 7 II. 2 - 3 × 4 ÷ 6 + 7 = 7

What will come in place of the question mark (?) in the following equation, if '+' and '-' are interchanged and '×' and '÷' are interchanged? 37 ÷ 5 - 91 + 16 × 4 = ?

If '+' and '-' are interchanged, and '×' and '÷' are interchanged, then what will come in place of the question mark (?) in the following equation? 26 ÷ 676 × 156 - 69 + 83 = ?