Question : Directions: After interchanging the given two signs what will be the values of equation (I) and (II) respectively? × and – I. 18 × 8 – 6 ÷ 3 + 4 II. 7 – 8 × 4 ÷ 2 + 15
Option 1: 89 and 6
Option 2: 6 and 69
Option 3: 18 and 10
Option 4: -8 and 10
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Correct Answer: 6 and 69
Solution : Given: I. 18 × 8 – 6 ÷ 3 + 4 II. 7 – 8 × 4 ÷ 2 + 15
Equation I: 18 × 8 – 6 ÷ 3 + 4 On interchanging the mathematical signs, we get – = 18 – 8 × 6 ÷ 3 + 4 = 18 – 8 × 2 + 4 = 18 – 16 + 4 = 6 Equation II: 7 – 8 × 4 ÷ 2 + 15 On interchanging the mathematical signs, we get – = 7 × 8 – 4 ÷ 2 + 15 = 7 × 8 – 2 + 15 = 56 – 2 + 15 = 69
So, the values are 6 and 69. Hence, the second option is correct.
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