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Evaluate: 45 ├╖ 9 ├Ч 5 + 12 - 8
25
29
33
21
29
Always remember that Division and Multiplication have the same priority level and must be solved from left to right, followed by Addition and Subtraction from left to right.
An arithmetic expression: 45 ├╖ 9 ├Ч 5 + 12 - 8
BODMAS:┬а(Bracket,┬аOf,┬аDivision,┬аMultiplication,┬аAddition,┬аSubtraction)
Always remember that Division and Multiplication have the same priority level and must be solved from left to right, followed by Addition and Subtraction from left to right.
Many students mistakenly perform Multiplication before Division (the 'DM' in BODMAS leads them to prioritize M over D), which is incorrect; they have equal precedence and must be solved left to right.
Perform Division
According to the BODMAS rule, perform division first since it appears first from the left: 45├╖9=5.
5├Ч5+12тИТ8
Perform Multiplication
Next, perform the multiplication operation: 5├Ч5=25.
25+12тИТ8
Perform Addition and Subtraction
Finally, solve the addition and subtraction from left to right: 25+12=37, then 37тИТ8=29.
37тИТ8=29
B is correct because the step-by-step application of the BODMAS rule yields a final result of 29.
This rule is fundamental for all quantitative aptitude sections including simplification, algebra, and physics numericals where order of operations is essential for correct results.
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