1.Given that 0 < a < b < c < d, which of the following the largest?
(a) (c+d) / (a+b)
(b) (a+d) / (b+c)
(c) b+c) / (a+d)
(d) (b+d) / (a+c)
2.Jake can dig a well in 16 days. Paul can dig the same well in 24 days. Jake, Paul and Hari together dig the well in 8 days. Hari alone can dig the well in
(a) 96 days
(b) 48 days
(c) 32 days
(d) 24 days
3.The sum of the digits of a three digit number is 17, and the sum of the squares of its digits is 109. If we subtract 495 from the number, we shall get a number consisting of the same digits written in the reverse order. Find the number.
4.Mark told John “If you give me half your money I will have Rs.75. John said, “if you give me one third of your money, I will have Rs.75/- How much money did John have ?