Featured Original PDF
Featured Original PDF
HEIGHTS AND DISTANCES IMPORTANT FACTS AND FORMULAE hypotenuse 1.We already know that: In a rt.angled DOAB, where ÐBOA = q, i)sin q = Perpendicular/Hypotenuse = AB/OB; ii)cos q = Base/Hypotenuse = OA/OB; iii)tan q = Perpendicular/Base = AB/OA; iv)cosec q = 1/sin q = OB/AB; Base v)sec q […]
STOCKS AND SHARES To start a big business or an industry, a large amount of money is needed. It is beyond the capacity of one or two persons to arrange such a huge amount. However, some persons associate together to form a company. They, then, draft a proposal, issue a prospectus(in the name of company), […]
ALLIGATION OR MIXTURE IMPORTANT FACTS AND FORMULAE 1. Alligation: It is the rule that enables us to find the ratio in which two or more ingredients at the given price must be mixed to produce a mixture of a desired price. 2. Mean Price: The cost price of a unit quantity of the mixture is […]
PROBLEMS ON NUMBERS In this section, questions involving a set of numbers are put in the form of a puzzle. You have to analyze the given conditions, assume the unknown numbers and form equations accordingly, which on solving yield the unknown numbers. SOLVED EXAMPLES Ex.1. A number is as much greater than 36 as is […]
CALENDAR IMPORTANT FACTS AND FOAMULAE Under this heading we mainly deal with finding the day of the week on a particular given date the process of finding it lies on obtaining the number of odd days. Odd Days : Number of days more than the complete number of weeks in a given Period ., is […]
PROBLEMS ON TRAINS IMPORTANT FACTS AND FORMULAE a km/hr= (a* 5/18) m/s. a m / s = (a*18/5) km/hr. 3 Time taken by a train of length 1 metres to pass a pole or a standing man or a signal post is equal to the time taken by the train to cover 1 metres. Time […]
H.C.F. AND L.C.M. OF NUMBERS IMPORTANT FACTS AND FORMULAE Factors and Multiples : If a number a divides another number b exactly, we say that a is a factor of b. In this case, b is called a multiple of a. Highest Common Factor (H.C.F.) or Greatest Common Measure (G.C.M.) or Greatest Common Divisor (G.C.D.): […]
RATIO AND PROPORTION IMPORTANT FACTS AND FORMULAE RATIO: The ratio of two quantities a and b in the same units, is the fraction a/b and we write it as a:b. In the ratio a:b, we call a as the first term or antecedent and b, the second term or consequent. Ex. The ratio 5: 9 […]
PROFIT AND LOSS COST PRICE: THE PRICE AT WHICH ARTICLE IS PURCHASED.ABBREVATED AS C.P. SELLING PRICE: THE PRICE AT WHICH ARTICLE IS SOLD. PROFIT OR GAIN:IF SP IS GREATER THAN CP,THE SELLING PRICE IS SAID TO HAVE PROFIT OR GAIN. LOSS: IF SPIS LESS THAN CP,THE SELLER IS SAID TO INCURED A LOSS. FORMULA 1.GAIN=(SP)-(CP). […]
SIMPLE INTEREST IMPORTANT FACTS AND FORMULAE 1.. Principal: The money borrowed or lent out for a certain period is called the principal or the sum. 2. Interest: Extra money paid for using other’s money is called Simple Interest (S.I.) : If the interest on a sum borrowed for a certain period is reckoned uniformly, then […]