Placement Papers - Infosys

There are 100 balls in a box. 20 are blue,        20 are red, 20 are black, and 20 are white and 20 orange. Find the        least no of ways to get the pair of balls.             There are 2p, 5p, 7p, 10p and 15p stamps are       available. My mom told me to buy three stamps of 5 each and two       stamps of 6 each. But I forget that. But my mom had given me the       exact amount to buy the stamps Rs. 3.00. Please help me to buy the       stamps.             In a circular bicycle race. There are 1/5th       of total racers are ahead of me and 5/6th are behind me.       Find the total no. of bicycle racers in the race.             There are tow trains. One from New York to       Washington and second from Washington to New York. The total journey       to a destination takes 5 hours. A train from New York to Washington       leaves on hour at every hour. The train from Washington to New York       leaves an hour and on half an hour. How many trains will be passing       if you are traveling from New York to Washington?             In a school there are fewer than 500 students.       The 1/3 are the whole numbers. The 1/4th and the 1/7th       are the whole numbers. Find the total number of students in the       school.             A person on his bicycle walks 8km uphill and       24km Downhill he took 2hr30minutes to complete this. He started       again without any stop now he took now 4hr50minutes. Find the       average speed of the cyclist at UPHILL and DOWNHILL.             There is question on relations. Who is the       brother, wife. (8 marks)             There is one more question on relations. (8       marks)             There are two mew systems developed for       temperature A and B. if A =14 the B=36, when A = 133 then B = 87.       Find when both the temperature becomes equal.