Question

If ${}^{\prime }{-}^{\prime }$ stands for 'addition', ${÷}^{\prime }$ stands for 'multiplication', ${}^{\prime }{\times }^{\prime }$ stands for 'subtraction' and ${}^{\prime }{+}^{\prime }$ for 'division', then which of the following is correct?

• A. $25\times 12-14÷4+6=16$
• B. $25-12+14÷2\times 4=15$
• C. $25+15÷5+4-16=21$
• D. $25+11-4÷10\times 6=20$

Answer 1

Answer: (C)

$25+15÷5+4-16=21$

Option (c) is correct.
$25+15÷5\times 4-16=21$ (using BODMAS rule)
$\Rightarrow 25+3\times 4-16=21$
$\Rightarrow 25+12-16=21÷37-16=21$
$\Rightarrow 21=21$
$\Rightarrow LHS=RHS$.