Hello, here I am providing you the maths formulas necessary for the MBA entrance exam as under:

Arithmetic formula list
PEMDAS: Parenthesis – Exponents – Multiplication – Division – Addition – Subtraction

[Positive Number] X [Positive Number] = [Positive Number]
[Positive Number] X [Negative Number] = [Negative Number]
[Negative Number] X [Negative Number] = [Positive Number]

[Positive Number] / [Positive Number] = [Positive Number]
[Positive Number] / [Negative Number] = [Negative Number]
[Negative Number] / [Negative Number] = [Positive Number]

[Odd Number] + [Odd Number] = [Even Number]
[Odd Number] – [Odd Number] = [Even Number]
[Odd Number] + [Even Number] = [Odd Number]
[Odd Number] – [Even Number] = [Odd Number]
[Even Number] + [Even Number] = [Even Number]
[Even Number] – [Even Number] = [Even Number]

[Odd Number] X [Odd Number] = [Odd Number]
[Odd Number] X [Even Number] = [Even Number]
[Even Number] X [Even Number] = [Even Number]

Factorials
n! = n * (n-1) * (n-2) * … * 2 * 1
0! = 1
Permutation and Combination formulas
Permutation formula: nPr = n! / (n-r)!
Combination formula: nCr = n! / (r!)(n-r)!

Absolute values
|x| depicts the absolute value (or magnitude). Here are some rules and formulas for absolute values.
|x| = x
|-x| = x
|x| = |-x|
|x| ≥ 0
|x| + |y| ≥ |x+y|

Base – Exponent Relationship
0n = 0
1n = 1
x0 = 1
x1 = x
(x)-n = 1 / xn
xm * xn = xm+n
xm / xn = xm-n
(xm)n = xm*n
(x/y)n = (x)n/(y)n

Volume formulas
Cube: (length)3
Rectangular prism: length X breadth X height
Cylinder: πr2h
Cone: (1/3) πr2h
Pyramid: (1/3) base X height
Sphere: (4/3)πr3