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TNPSC Question Papers, Group1, Group2, Group4, VAO-Download Pdf

PREVIOUS YEAR TNPSC TAMIL QUESTIONS part 2


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 TNPSC APTITUDE AND MENTAL ABILITY – for Group 1, Group 2, Group 2A, Group 3, Group 4, VAO and Others. FORMULAE : A = P [1 + (R / 100)]T Where, A = Amount P = Principal R = Rate of interest T = Time period Example : What will be the compound interest on a sum of 50000 after 3 years at the rate of 12 % p.a? Solution : P = 50000, R = 12 %, n = 3 yr A = P [1 + (R / 100)]T = 50000 [1 + (12 / 100)]2 = 50000 [(28 / 25) * (28 / 25) * (28 / 25)] = 3551232 / 5 = 70246.40 Answer => 70246.40   Note : If the rate of interest for 1st year is r1 %, for 2nd year it is r2 % and for 3rd year it is r3 % then the amount for 3 years? = P * [1 + (r1 / 100)] [1 + (r2 / 100)] [1 + (r3 / 100)] Example : The population of particular Area A of the city is 5000, it increases by 10 % in 1st year, and it is decreased by 20 % in the 2nd year because of some reason. In the 3rd year population increases 30 %, what will be the population of Area A at the end of the 3rd year? Solution : P =5000, R1 = 10...

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