Question : Directions: After interchanging the given two signs what will be the values of expression (I) and (II) respectively? + and – I. 45 + 15 × 30 ÷ 10 – 25 II. 6 × 9 + 5 – 8 ÷ 4
Option 1: 25 and 51
Option 2: 27 and 53
Option 3: 53 and 27
Option 4: 51 and 25
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Correct Answer: 25 and 51
Solution : Given: + and – I. 45 + 15 × 30 ÷ 10 – 25 II. 6 × 9 + 5 – 8 ÷ 4
Replace the given signs in the equations one by one with the original signs in the given equations. I. 45 + 15 × 30 ÷ 10 – 25 = 45 – 15 × 30 ÷ 10 + 25 = 45 – 15 × 3 + 25 = 25 II.6 × 9 + 5 – 8 ÷ 4 =6 × 9 – 5 + 8 ÷ 4 = 54 – 5 + 2 = 51
So, the answer after solving the equation I and II is 25 and 51. Hence, the first option is correct.
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Question : Directions: After interchanging the given two numbers (Not digits) what will be the values of expression (I) and (II) respectively? 4 and 6 l. 8 – 4 × 3 + 6 ÷ 2 II. 4 + 3 × 6 – 8 ÷ 2
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Question : Directions: By interchanging the given two signs which of the following equations will be correct? + and × l. 5 × 12 – 15 + 20 ÷ 30 = 7 II. 51 ÷ 17 × 9 + 10 – 8 = 85
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