Question : Directions: What will come in the place of (?) in the following equation, if + and × are interchanged and also 5 and 9 are interchanged? 3 + 9 – 6 × 5 ÷ 3 = ?
Option 1: 10
Option 2: 16
Option 3: 12
Option 4: 14
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Correct Answer: 12
Solution : Given: 3 + 9 – 6 × 5 ÷ 3 = ?
On interchanging the mathematical signs and numbers, we get – = 3 × 5 – 6 + 9 ÷ 3 = 3 × 5 – 6 + 3 = 15 – 6 + 3 = 12
Hence, the third option is correct.
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Question : Directions: What will come in the place of (?) in the following equation, if × and – are interchanged and also + and ÷ are interchanged? 10 × 4 + 2 – 5 ÷ 4 = ?
Option 1: 6
Option 2: 8
Option 3: 4
Option 4: 2
Question : Directions: Substitute the correct mathematical symbols in place of * in the following equation. 16 * 4 * 5 * 14 * 6
Option 1: ÷, –, =, ×
Option 2: –, ×, +, =
Option 3: ÷, ×, =, +
Option 4: ÷, +, =, –
Question : Directions: What will come in the place of the question mark (?) in the following equation if + and – are interchanged and × and ÷ are interchanged? 40 × 10 − 20 + 10 ÷ 2 = ?
Option 1: 4
Option 3: 6
Question : Directions: What will come in the place of (?) in the following equation, if × and – are interchanged and also + and ÷ are interchanged? 27 × 8 − 3 ÷ 4 + 2 = ?
Option 1: 5
Option 2: 2
Option 3: 1
Option 4: 7
Question : Directions: Which two signs need to be interchanged to make the following equation correct? 9 + 3 – 4 ÷ 5 × 2 = 9
Option 1: – and ×
Option 2: + and ×
Option 3: + and ÷
Option 4: – and +
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