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
Option 1: Only II
Option 2: Both I and II
Option 3: Only I
Option 4: Neither I nor II
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Correct Answer: Only I
Solution :
Given:
8 and 7
I. 8 + 7 × 9 ÷ 3 – 6 = 25
II. 7 × 5 – 8 + 6 ÷ 2 = 38
After interchanging the numbers the equations are as follows –
I. 7 + 8 × 9 ÷ 3 – 6 = 25
= 7 + 24 – 6
= 25
II. 8 × 5 – 7 + 6 ÷ 2 = 38
= 40 – 7 + 3
= 36 ≠ 38
Therefore, only the equation I satisfies the R.H.S. of the given equation. Hence, the third option is correct.
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