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FlizzIndia India's Largest Educational Portal > Archive for Math Tricks

Category: Math Tricks

Maths Essential formulas for competitive Exams

March 23, 2016March 23, 2016 flizzindia

ALGEBRA: 1. Sum of first n natural numbers = n(n+1)/2 2. Sum of the squares of first n natural numbers = n(n+1)(2n+1)/6 3. Sum of the cubes of first n natural numbers = [n(n+1)/2]^2 4. Sum of first n natural Read More …

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Sequence and Series Important Formulas for Competitive Exams

March 18, 2016 flizzindia

Arithmetic Progression(AP) Arithmetic progression(AP) or arithmetic sequence is a sequence of numbers in which each term after the first is obtained by adding a constant, d to the preceding term. The constant d is called common difference. An arithmetic progression Read More …

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Addition, Subtraction and Multiplication Rules for Even and Odd Numbers

March 18, 2016 flizzindia

Addition Rules for Even and Odd Numbers 1. Sum of any number of even numbers is always even 2. Sum of even number of odd numbers is always even 3. Sum of odd number of odd numbers is always odd Read More …

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Math Tricks for Competitive exams

December 15, 2015December 15, 2015 flizzindia

1. Multiplication of any two numbers, lies between 11 and 19 13*19 = (13+9)*10 + (3*9) = 220 + 27 = 247 Means add first number and last digit of the second number take zero in the third place of Read More …

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