Question : Directions: By Interchanging the given two numbers which of the following equations will be not correct? 9 and 6
Option 1: 7 + 6 × 4 ÷ 9 – 8 = 5
Option 2: 6 × 8 – 9 ÷ 3 + 5 = 75
Option 3: 9 × 7 + 4 ÷ 1 – 6 = 38
Option 4: 7 × 6 ÷ 3 + 9 – 8 = 19
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Correct Answer: 9 × 7 + 4 ÷ 1 – 6 = 38
Solution : Given: 9 and 6
Replace the given numbers in the options one by one with the original numbers in the given equation. First option: 7 + 6 × 4 ÷ 9 – 8 = 5 ⇒ 7 + 9 × 4 ÷ 6 – 8 = 7 + 6 – 8 = 5 Second option: 6 × 8 – 9 ÷ 3 + 5 = 75 ⇒ 9 × 8 – 6 ÷ 3 + 5 = 72 – 2 + 5 = 75 Third option: 9 × 7 + 4 ÷ 1 – 6 = 38 ⇒ 6 × 7 + 4 ÷ 1 – 9 = 42 + 4 – 9 = 37 ≠ 38 Fourth option: 7 × 6 ÷ 3 + 9 – 8 = 19 ⇒ 7 × 9 ÷ 3 + 6 – 8 = 21 + 6 – 8 = 19
So, only the third option satisfies the L.H.S. ≠ R.H.S. of the given equation. Hence, the third option is correct.
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Question : Directions: By interchanging the given two signs and numbers which of the following equations will be correct? × and +, 9 and 6
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be correct? × and +, 6 and 4
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Question : Directions: By Interchanging the given two numbers which of the following equations will be not correct? 7 and 4
Question : Directions: By Interchanging the given two numbers which of the following equations will be not correct? 5 and 9
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