Question : Directions: By Interchanging the given two numbers which of the following equations will be not correct? 9 and 3 I. 7 × 4 ÷ 2 – 9 + 3 = 22 II. 9 + 4 – 6 × 3 ÷ 2 = –10
Option 1: Only I
Option 2: Both I and II
Option 3: Only II
Option 4: Neither I nor II
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Correct Answer: Both I and II
Solution : Given: I. 7 × 4 ÷ 2 – 9 + 3 = 22 II. 9 + 4 – 6 × 3 ÷ 2 = –10
After Interchanging 9 and 3. I. 7 × 4 ÷ 2 – 3 + 9 = 22 Solving the L.H.S. of the equation – 7 × 2 – 9 + 3 14 – 9 + 3 8 ≠ 22 II. 3 + 4 – 6 × 9 ÷ 2 = –10 Solving the L.H.S. of the equation – 3 + 4 – 27 – 20 ≠ 10
So, both the equations are incorrect. Hence, the second option is correct.
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