Quantitative Aptitude :: Simplification
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Simplification Important Formulas
1. 'BODMAS' Rule:
This rule depicts the correct sequence in which the operations are to be executed, so as to find out the value of given expression.
B - Bracket,
O - of,
D - Division,
M - Multiplication,
A - Addition and
S - Subtraction
Thus, in simplifying an expression, first of all the brackets must be removed, strictly in the order ( ), { } and [ ].
After removing the brackets, we must use the following operations strictly in the order:
(i) of
(ii) Division
(iii) Multiplication
(iv) Addition
(v) Subtraction.
Modulus of a real number a is defined as
\(\left| x \right| = \begin{cases}
\ \ \ a, \ if \ a > 0 \\
-a, \ if \ a < 0 \\
\end{cases} \)
Ex. |5| = 5 and |-5| = -(-5) = 5.
When an expression contains Virnaculum, before applying the 'BODMAS' rule, we simplify the expression under the Virnaculum.