Question : Directions: By Interchanging the given two numbers (not digits) which of the following equations will not be correct? 7 and 4 I. 4 × 3 – 7 + 8 ÷ 2 = 23 II. 7 × 5 – 9 ÷ 3 + 4 = 24
Option 1: Neither I nor II
Option 2: Only II
Option 3: Only I
Option 4: Both I and II
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Correct Answer: Only I
Solution : Given: I. 4 × 3 – 7 + 8 ÷ 2 = 23 II. 7 × 5 – 9 ÷ 3 + 4 = 24
After interchanging the numbers 7 and 4 the equations become – I. 7 × 3 – 4 + 8 ÷ 2 = 23 = 21 – 4 + 4 = 21 ≠ 23 II. 4 × 5 – 9 ÷ 3 + 7 = 24 = 20 – 3 + 7 = 24
So, in equation I, L.H.S. ≠ R.H.S. Hence, the third option is correct.
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Question : Directions: By Interchanging the given two numbers (Not digits) which of the following equations will be correct? 8 and 7 I. 8 + 7 × 9 ÷ 3 – 6 = 25 II. 7 × 5 – 8 + 6 ÷ 2 = 38
Question : Directions: By interchanging the given two numbers (Not digits) which of the following equations will be correct? 5 and 9 I. 7 × 9 + 5 – 8 ÷ 4 = 42 II. 9 × 3 + 5 ÷ 1 – 4 = 20
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
Question : Directions: By interchanging the given two numbers (not digits) which of the following equations will not be correct? 4 and 6
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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