Question

Which one of the four interchanges in signs and numbers would make the given equation correct?

$3+5-2=0$

• A. $+$ and $-$, $2$ and $3$
• B. $+$ and $-$, $2$ and $5$
• C. $+$ and $-$, $3$ and $5$
• D. None of these

Answer 1

Answer: (A)

$+$ and $-$, $2$ and $3$

Option A:

If interchange were made according to it, we get

$2-5+3=0$ or $0=0$ which is true.

Option B:
If interchange were made according to it, we get

$3-2+5=0$ or $6=0$, which is false.

Option C:
If interchange were made according to it, we get

$5-3+2=0$ or $4=0$ which is not true.

Hence, option A.