Staff Selection Commission conducts many national level exams from stenographer exam to combined graduate level exam. The one thing that remains same is their syllabus, type of questions and number of sections. As far as aptitude section is concerned, the only different thing from the rest of the exams is the questions form Algebra, trigonometry and Geometry including few other topics. You can get study materials, formulas, questions on topics such as work and time, heights and distance, pipes and cisterns, probability and other general aptitude topics.
Here you can find mathematics formulas specially for questions from Algebra, trigonometry and geometry. You can download these PDF files and note down all the important formulas or simply save it in your mobiles so that you can access them at any point of time. You must practice previous years questions and try to apply formulas in it. It’s the best way to remember maths formulas.
Below are the PDF files of formulas to be downloaded :
 | Math Made Nice & Easy #9: Integration Formulas, Combinations & Permutations and Probability (Mathematics Learning and Practice) Our Price: Rs.651 |
Basic math formulas
Average formula:Let a1,a2,a3,......,an be a set of numbers, average = (a1 + a2 + a3,+......+ an)/n
Fractions formulas:
Converting a mixed number to an improper fraction:
Converting an improper fraction to a mixed number:
Formula for a proportion:
In a proportion, the product of the extremes (ad) equal the product of the means(bc),
Thus, ad = bc
Percent:
Percent to fraction: x% = x/100
Percentage formula: Rate/100 = Percentage/base
Rate: The percent.
Base: The amount you are taking the percent of.
Percentage: The answer obtained by multiplying the base by the rate
Consumer math formulas:
Discount = list price × discount rate
Sale price = list price − discount
Discount rate = discount ÷ list price
Sales tax = price of item × tax rate
Interest = principal × rate of interest × time
Tips = cost of meals × tip rate
Commission = cost of service × commission rate
Geometry formulas:
Perimeter:
Perimeter of a square: s + s + s + s
s:length of one side
Perimeter of a rectangle: l + w + l + w
l: length
w: width
Perimeter of a triangle: a + b + c
a, b, and c: lengths of the 3 sides
Area:
Area of a square: s × s
s: length of one side
Area of a rectangle: l × w
l: length
w: width
Area of a triangle: (b × h)/2
b: length of base
h: length of height
Area of a trapezoid: (b1 + b2) × h/2
b1 and b2: parallel sides or the bases
h: length of height
volume:
Volume of a cube: s × s × s
s: length of one side
Volume of a box: l × w × h
l: length
w: width
h: height
Volume of a sphere: (4/3) × pi × r3
pi: 3.14
r: radius of sphere
Volume of a triangular prism: area of triangle × Height = (1/2 base × height) × Height
base: length of the base of the triangle
height: height of the triangle
Height: height of the triangular prism
Volume of a cylinder:pi × r2 × Height
pi: 3.14
r: radius of the circle of the base
Height: height of the cylinder
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