Mathematics Quantitative Aptitude “BODMAS” Rule “BODMAS” Rule: Correct sequence in which operations to be executed:- B   –    Brackets first –   in the order(), {} and []. O  – Orders (i.e. Powers and Square Roots, etc.) DM – Division and Multiplication (left-to-right) AS- Addition and Subtraction (left-to-right) Useful for : SSC,CGL, CHSL, CPO, CPMF, UPSC, […]

Quantitative aptitude – Least Common Multiple (L.C.M.) Factorization Method & Division Method (Short cut method) Product of two numbers =Product of their H.C.F. and L.C.M., Co-primes, H.C.F. & LCM of Fractions: Useful for : SSC,CGL, CPO, CPMF, UPSC, CDS, NDA, GATE, Railways RRB, PO, Clerk, Bank, Army, Force, Sub-Inspector, Teacher, Constable, Police, Lekhpal, UPSSC, State […]

Factors and Multiples composite number Prime factorization HCF Prime Factorization method & Division Method H.C.F. of more than two numbers Useful for SSC, CGL, CPO, CPMF, UPSC, NDA, CDS, Railways RRB, PO Bank, Army, Force, Police, Lekhpal, Teacher, Entrance Exam and State govt, Jobs Leak India Video : Education

For all competitive Exams – UPSC, SSC, UPSSC, Railway, RRB, Police, Lekhpal, teacher MULTIPLICATION BY SHORT CUT METHODS 1. Multiplication By Distributive Law : a x b + a x c = a x (b + c) Ex. – 978 x 184 + 978 x 816 = 978 x (184 + 816) = 978 x […]

TESTS OF DIVISIBILITY Divisibility By 2 : A number is divisible by 2, if its unit’s digit is any of 0, 2, 4, 6, 8. Ex. 61752 is divisible by 2, Divisibility By 3 : A number is divisible by 3, if the sum of its digits is divisible by 3. Ex.592482 is divisible by […]

Digits:  Ten symbols     0,1,2.3,4,5,6,7,8,9 called Digits to  represent any number Numeral : A group of digits, denoting number is called a Numeral. Place value or Local value of a digit:  In a number 258346 , Place value of 6 = 6×1 =6 , Place value of 4 =4×10 =40, Place value of 3 = 3×100 […]