Question

Find the value of $7 + \{4 + 3 \text{ of } 4 - (5 + 3 - 6 \div 2)\}$.

• A. 18
• B. 15
• C. 21
• D. 17

Answer 1

Answer:

A. 18

The value of the expression is 18.

Following the BODMAS rule (Brackets, Of, Division, Multiplication, Addition, Subtraction), we solve from the innermost brackets outward:

1. Solve the Parentheses ( ):

* Inside the parentheses, perform division first:

$6 \div 2 = 3$

* Then perform addition and subtraction:

$5 + 3 - 3 = 8 - 3 = 5$

2. Solve the Curly Braces { }:

* Substitute $5$ back into the braces:

$4 + 3 \text{ of } 4 - 5$

* Evaluate the "of" operation (which means multiplication):

$3 \text{ of } 4 = 3 \times 4 = 12$

* Complete the calculations inside the braces (addition then subtraction):

$4 + 12 - 5 = 16 - 5 = 11$

3. Final Calculation:

* Complete the outermost addition:

$7 + 11 = 18$