Question

4 If 'P' denotes 'addition', 'D' denotes 'subtraction', 'S' denotes 'multiplication', and 'V' denotes 'division', then what will be the value

of the following expression?

5(7 s3) D 3 (8P6) v7 D 11 (3 S 13 S 2) P 2 (41 s 9)

• A. 96
• B. 42
• C. -21
• D. 21

Answer 1

Answer:

C. -21

Replace the symbols with their meanings:

• P = Addition ((+))

• D = Subtraction ((-))

• S = Multiplication ((\times))

• V = Division ((\div))

The expression becomes:

$5(7\times3)-3(8+6)\div7-11(3\times13\times2)+2(41\times9)$

Evaluate brackets

$7\times3=21,\quad 8+6=14,\quad 3\times13\times2=78,\quad 41\times9=369$

So,

$5(21)-3(14)\div7-11(78)+2(369)$

Perform multiplication/division

$105-\frac{42}{7}-858+738$
105-6-858+738

Simplify

99-858+738

-759+738=-21