Question : Directions: By interchanging the given two signs which of the following equations will be correct? ÷ and +
Option 1: 18 ÷ 24 – 6 × 6 + 3 = 32
Option 2: 12 – 8 + 12 × 9 ÷ 3 = 10
Option 3: 12 ÷ 8 × 3 + 6 – 10 = 8
Option 4: 7 + 21 × 42 ÷ 14 – 9 = 19
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Correct Answer: 7 + 21 × 42 ÷ 14 – 9 = 19
Solution : Given: ÷ and +
Replace the given symbols in the options one by one with the original symbols in the given equation. First option: 18 ÷ 24 – 6 × 6 + 3 = 32 = 18 + 24 – 6 × 6 ÷ 3 = 32 = 42 – 12 = 30 ≠ 32 Second option: 12 – 8 + 12 × 9 ÷ 3 = 10 = 12 – 8 ÷ 12 × 9 + 3 = 10 = 12 – 6 + 3 = 9 ≠ 10 Third option: 12 ÷ 8 × 3 + 6 – 10 = 8 = 12 + 8 × 3 ÷ 6 – 10 = 8 = 12 + 4 – 10 = 6 ≠ 8 Fourth option: 7 + 21 × 42 ÷ 14 – 9 = 19 = 7 ÷ 21 × 42 + 14 – 9 = 19 = 14 + 14 – 9 = 19 = R.H.S.
So, only the fourth option satisfies the R.H.S. of the given equation. Hence, the fourth option is correct.
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Question : Directions: By interchanging the given two signs which of the following equations will be correct? × and +
Option 1: 7 × 8 ÷ 9 + 18 – 11 = 16
Option 2: 24 – 8 – 5 × 5 + 3 = 14
Option 3: 5 × 10 – 15 + 20 ÷ 25 = 8
Option 4: 24 × 8 + 6 ÷ 3 – 18 = 22
Question : Directions: By interchanging the given two signs which of the following equations will be not correct? + and ÷
Option 1: 18 + 6 – 6 ÷ 3 × 3 = 6
Option 2: 18 + 2 × 6 ÷ 3 – 7 = 50
Option 3: 7 × 8 ÷ 4 + 2 – 6 = 49
Option 4: 6 × 9 + 3 – 24 ÷ 8 = 2
Option 1: 12 ÷ 8 × 12 + 6 – 7 = 21
Option 2: 9 – 3 + 12 × 8 ÷ 4 = 11
Option 3: 46 + 23 ÷ 14 × 5 – 6 = 66
Option 4: 6 + 20 ÷ 12 × 7 – 11 = 70
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be correct? × and ÷, 7 and 9
Option 1: 9 – 7 × 2 + 6 ÷ 3 = 11
Option 2: 9 + 4 × 3 – 7 ÷ 1 = 40
Option 3: 8 × 3 ÷ 6 + 9 – 7 = 14
Option 4: 9 × 3 + 4 ÷ 2 – 7 = 18
Question : Directions: By interchanging the given two signs which of the following equations will be correct? × and –
Option 1: 7 × 9 – 8 ÷ 2 + 6 = 25
Option 2: 8 × 6 – 9 ÷ 3 + 10 = 0
Option 3: 16 – 4 ÷ 2 + 8 × 1 = 36
Option 4: 5 + 7 × 3 – 4 ÷ 2 = 8
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