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Today I want to share what Is BODMAS Rule & How to use it? BODMAS rule decides the order of operations for add, subtract, multiply, divide, etc as below shown B-Brackets (do all operations contained in the brackets first) O-Orders (powers and square roots etc) D-Division M-Multiplication A-Addition S- Subtraction Lets see an example and check how BODMASS Rule works 30-(2*6+15/3) +8*3/6 Step1: Brackets 2*6+15/3 = 12+5 = 17 Step2: Division 30-17+8*1/2 Step3: Multiplication 30-17+4 Step 4: Addition and Subtraction 30-17+4=17 20+30-5/4*2+ (1+6) (5-6/4)+9*7 1-6*(2+9)/8 BODMAS Rule is very helpful in solving various algebra math problems. (Aug 8, 2014 | post #1)

Some formulas of Arithmetic progression/series

An arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant. Example: 2,4,6,8,10 .. Arithmetic Series : The sum of the numbers in a finite arithmetic progression is called as Arithmetic series. Example: 2+4+6+8+10 .. nth term in the finite arithmetic series Suppose Arithmetic Series a1+a2+a3+ ..an Then nth term an=a1+(n-1)d Where a1- First number of the series an- Nth Term of the series n- Total number of terms in the series d- Difference between two successive numbers Sum of the total numbers of the arithmetic series Sn=n/2*(2*a1+(n-1) *d) Where Sn Sum of the total numbers of the series a1- First number of the series n- Total number of terms in the series d- Difference between two successive numbers Example: Find n and sum of the numbers in the following series 3 + 6 + 9 + 12 + x? Here a1=3, d=6-3=3, n=5 x= a1+(n-1)d = 3+(5-1)3 = 15 Sn=n/2*(2a1+(n-1)* d) Sn=5/2*(2*3+(5-1)3 )=5/2*18 = 45 I hope the above formulae are helpful to solve your math problems Thanks (Jul 30, 2014 | post #1)

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