Question

If ${}^{\prime }{P}^{\prime }$ means 'division', ${}^{\prime }{T}^{\prime }$ means 'addition', ${}^{\prime }{M}^{\prime }$ means 'subtraction' and ${}^{\prime }{D}^{\prime }$ means 'multiplication', then what will be the value of the expression $12M12D28P7T15?$

• A. $-30$
• B. $-15$
• C. $15$
• D. $-21$

Answer 1

Answer: (D)

$-21$

Using the correct symbols, we have
Given expression $=12-12\times 28÷7+15$
$=12-12\times 4+15=12-48+15=27-48=-21$.