Join 60,000+ competitive exam aspirants
Evaluate the given expression. 5├Ч3тИТ12├╖4+8
4
3
20
14
20
Use the BODMAS rule sequence: first divide (12/4 = 3), then multiply (5*3 = 15), then add (15+8 = 23), and finally subtract (23-3 = 20).
The expression is 5 * 3 - 12 / 4 + 8.
BODMAS:Brackets,┬аOf,┬аDivision,┬аMultiplication,┬аAddition,┬аSubtraction
Use the BODMAS rule sequence: first divide (12/4 = 3), then multiply (5*3 = 15), then add (15+8 = 23), and finally subtract (23-3 = 20).
Many students perform operations strictly from left to right, ignoring the priority of division and multiplication over addition and subtraction.
Identify operations
According to the BODMAS rule, the order of operations is Division, Multiplication, Addition, and then Subtraction.
5├Ч3тИТ12├╖4+8
Perform Division
Divide 12 by 4 first.
12├╖4=3тЯ╣5├Ч3тИТ3+8
Perform Multiplication
Multiply 5 by 3.
5├Ч3=15тЯ╣15тИТ3+8
Perform Addition and Subtraction
Add 15 and 8, then subtract 3.
15+8тИТ3=23тИТ3=20
C is correct because the result of the expression evaluated using the BODMAS rule is 20.
Always remember the order of operations in any quantitative aptitude question involving multiple arithmetic signs, as it is the most fundamental rule for accuracy.