Question : Directions: By interchanging the given two signs and numbers which of the following equations will be not correct? – and ÷, 8 and 2 I. 5 + 7 – 8 × 4 ÷ 2 = 9 II. 3 + 8 × 4 –2 ÷ 1 = 3
Option 1: Neither I nor II
Option 2: Only II
Option 3: Both I and II
Option 4: Only I
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Correct Answer: Only I
Solution : Given: I. 5 + 7 – 8 × 4 ÷ 2 = 9 II. 3 + 8 × 4 –2 ÷ 1 = 3
After interchanging the signs and numbers the equations are as follows – I. 5 + 7 ÷ 2 × 4 – 8 = 9 = 5 + 3.5 × 4 – 8 = 5 + 14 – 8 = 11 ≠ 9 II. 3 + 2 × 4 ÷ 8 –1 = 3 = 3 + 1 –1 = 3 = R.H.S.
So, only in the first equation R.H.S. ≠ L.H.S of the given equations. Hence, the fourth option is correct.
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Question : Directions: By interchanging the given two signs and numbers which of the following equations will be not correct? × and +, 7 and 4 I. 7 × 8 + 4 – 6 ÷ 3 = 57 II. 4 × 8 – 9 ÷ 3 + 7 = 3
Option 1: Only II
Option 2: Only I
Option 3: Neither I nor II
Option 4: Both I and II
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be not correct? × and ÷, 2 and 6 I. 7 – 4 × 3 ÷ 6 + 2 = 8 II. 6 – 8 × 2 + 9 ÷ 3 = 5
Option 2: Neither I nor II
Option 3: Only I
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be not correct? × and –, 8 and 4 I. 4 + 3 × 8 – 2 ÷ 1 = 3 II. 8 × 2 – 4 + 6 ÷ 2 = 11
Option 1: Both I and II
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be not correct? + and ×, 5 and 4 I. 4 + 8 × 5 – 7 ÷ 1 = 37 II. 5 × 3 – 4 + 6 ÷ 2 = – 8
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
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