Question

Evaluate the following expression.
$15÷[6+3^2]\times 5-1$

• A. 7
• B. 36
• C. 4
• D. 74

Answer 1

The correct option is C 4

According to PEMDAS, the order of operations to solve a mathematical expression:
P: Parentheses
E: Exponents
M: Multiplication
D: Division
A: Addition
S: Subtraction

Step 1: Solve the expression within the parentheses.
$\to [6+3^2]$
Step 2: Solve the exponent.
$\to [6+9]$
Step 3: Perform addition within the parentheses.
$\to [6+9]=15$
Step 4: Perform division.
$\to 15÷15\times 5-1=1\times 5-1$
Step 5: Perform multiplication.
$\to 1\times 5-1=5-1$
Step 6: Perform subtraction.
$\to 5-1=4$

Thus, the correct answer is 4.