Question

If "-" means"$÷$"; "+" means "$\times$"; "$÷$" means "-" and "$\times$" means "+", then which of the following option is true?

• A. $1÷2+3\times 6-8=12$
• B. $2+3-5\times 8÷4=7$
• C. $5+6\times 8-2÷3=31$
• D. $6÷1+2-8\times 4=31$
• E. None of these

Answer 1

The correct option is C $5+6\times 8-2÷3=31$

After submitting the new symbols, the given expressions will be:
(a) $1-2\times 3+6÷8$
$=\frac{-17}{4}\ne 12$
(b) $2\times 3÷5+8-4$
$=\frac{26}{5}\ne 7$
(c) $5\times 6+8÷2-3=31$ $=$ RHS.

So, option (C) is true.
(d) $6-1\times 2÷8+4$
$=\frac{39}{4}\ne 31$
Hence, option (C) is the correct answer.