Question : Directions: By interchanging which two digits the equation will be correct? 43 ÷ 2 × 26 – 2 = 527
Option 1: 6 and 2
Option 2: 2 and 3
Option 3: 3 and 6
Option 4: 7 and 4
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Correct Answer: 3 and 6
Solution : Given: 43 ÷ 2 × 26 – 2 = 527
Let's check the options – First option: 6 and 2 Since there are more than one 2's present in the equation, it is not clear which 2 needs to be interchanged. So, this option is incorrect. Second option: 2 and 3 Since there are more than one 2's present in the equation, it is not clear which 2 needs to be interchanged. So, this option is incorrect. Third option: 3 and 6 ⇒ 46 ÷ 2 × 23 – 2 = 527 On solving the L.H.S. of the equation – = 46 ÷ 2 × 23 – 2 = 23 × 23 – 2 = 527 Fourth option: 7 and 4 ⇒ 73 ÷ 2 × 26 – 2 = 524 On solving the L.H.S. of the equation – = 73 ÷ 2 × 26 – 2 = 36.5 × 26 – 2 = 949 – 2 = 947 ≠ 524
So, only the third option satisfies the equation. Hence, the third option is correct.
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Question : Directions: By Interchanging which two signs the equation will be correct? 21 – 7 × 4 ÷ 10 + 2 = 4
Option 1: – and ×
Option 2: × and ÷
Option 3: – and ÷
Option 4: + and –
Question : Directions: By Interchanging which two signs the equation will be correct? 6 – 10 × 8 ÷ 5 + 7 = 15
Option 1: + and –
Option 2: ÷ and –
Option 3: + and ÷
Option 4: × and ÷
Question : Directions: After interchanging two signs and two numbers, the value of the given equation will be 6. 7 – 2 × 1 ÷ 3 + 5
Option 1: × and ÷,7 and 5
Option 2: × and ÷, 2 and 7
Option 3: + and –, 7 and 5
Option 4: × and –, 5 and 3
Question : Directions: By Interchanging which two signs the equation will be correct? 27 ÷ 3 – 18 + 3 × 2 = 18
Option 2: × and +
Option 4: ÷ and ×
Question : Directions: By interchanging which two signs the equation will be correct? 15 + 5 ÷ 2 – 9 × 3 = 22
Option 3: × and –
Option 4: ÷ and +
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