Question : Directions: Which two signs should be interchanged to make the given equation correct?
12 + 4 ÷ 2 – 6 = 16
Option 1: – and =
Option 2: + and –
Option 3: ÷ and =
Option 4: ÷ and +
Correct Answer: + and –
Solution :
Given:
12 + 4 ÷ 2 – 6 = 16
Replace the given symbols in the options one by one with the original symbols in the given equation.
Let's check each option –
First option:
– and =
12 + 4 ÷ 2 = 6 – 16
12 + 2 = –10
14
≠
–10
Second option:
+ and –
12 – 4 ÷ 2 + 6 = 16
12 – 2 + 6 = 16
16 = 16 (L.H.S. = R.H.S.)
Third option:
÷ and =
12 + 4 = 2 – 6 ÷ 16
16 = 2 – 0.375
16
≠ 1.625
Fourth option:
÷ and +
12 ÷ 4 + 2 – 6 = 16
3 + 2 – 6 = 16
–1 ≠ 16
So, only the second option satisfies the R.H.S. of the given equation. Hence, the second option is correct.
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