AP Police Constable 2017 Mains Previous Year Paper (22-Jan-2017)

At the same rate of annual compound interest if a sum becomes Rs. 12,000 in 3 years and Rs.15000 in 6 years, then the principal amount (in rupees) is

A purse is having 20 paise and 25 paise coins and the total number of coins is 50. If the total value of the coins in the purse is Rs.11, then the number of 25 paise coins is

In a fraction, if both the numerator and the denominator are decreased by 1 then it is equal to $\frac{1}{2}$ . If the numerator is increased by 2, then it is equal to $\frac{2}{3}$ . Then the fraction is

If 2 + 4 + 6 + 8 + ... n terms = x and 1 + 3 + 5 + 7 + ... n terms = y,

then the value of 7 + 11 + 15 + 19 + ... n terms represents