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APTITUDE

Aptitude: Problems on H.C.F and L.C.M

problem on H.C.F and L.C.M    1. Factors and Multiples: –If number a divided another number b exactly, we say that a is a factor of b. In this case, b is called a multiple of a. 2. Highest Common Factor (H.C.F.) or Greatest Common Measure (G.C.M.) or Greatest Common …

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Aptitude: Problems on Numbers

FORMULA a + b)(a – b) = (a2 – b2)  (a + b)2 = (a2 + b2 + 2ab)  (a – b)2 = (a2 + b2 – 2ab)  (a + b + c)2 = a2 + b2 + c2 + 2(ab + bc + ca) (a3 + b3) = (a …

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Aptitude: Numbers

  Some Basic Formula i. (a + b)(a – b) = (a2 – b2) ii. (a + b)2 = (a2 + b2 + 2ab) iii. (a – b)2 = (a2 + b2 – 2ab) iv. (a + b + c)2 = a2 + b2 + c2 + 2(ab + bc …

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Aptitude :: Compound Interest

Let Principal = P, Rate = R% per annum, Time = n When interest is compound Annually:    Amount = P 1 + R n 100 When interest is compounded Half-yearly:     Amount = P 1 + (R/2) 2n 100 When interest is compounded Quarterly:     Amount = P …

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APTITUDE-TIME AND WORKS

The money  borrowed or lent out for a certain period is called the principal or the sum. Interest: Extra money paid for using other’s money is called interest. Simple Interest (S.I.): If the interest on a sum borrowed for certain period is reckoned uniformly, then it is called simple interest. Let Principal = P, Rate …

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aptitude :: height and distance

Trigonometry: In a right angled OAB, where BOA = , i. sin = Perpendicular = AB ; Hypotenuse OB ii. cos = Base = OA ; Hypotenuse OB iii. tan = Perpendicular = AB ; Base OA iv. cosec = 1 = OB ; sin AB v. sec = 1 …

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TIME AND DISTENCE

TIME AND DISTENCE FORMULA 1. Speed, Time and Distance: Speed = Distance , Time = Distance , Distance = (Speed x Time). Time Speed 2. km/hr to m/sec conversion: x km/hr = x x 5 m/sec. 18 3. m/sec to km/hr conversion: x m/sec = x x 18 km/hr. 5 …

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Problems on Trains

Problems on Trains (Formula) 1. km/hr to m/s conversion: a km/hr =a * 5/18 m/s. 2. m/s to km/hr conversion: a m/s =a * 18/5 km/hr. 3. Formulas for finding Speed, Time and Distance 4. Time taken by a train of length l metres to pass a pole or standing …

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APTITUDES

APTITUDES Problems on Trains Time and Distance Height and Distance Time and Work Simple Interest Compound Interest Profit and Loss Partnership Percentage Problems on Ages Calendar Clock Average Area Volume and Surface Area Permutation and Combination Numbers Problems on Numbers Problems on H.C.F and L.C.M Decimal Fraction Simplification Square Root …

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