Find the unit digit in the product of (111 × 222 × 333 × 444 × 555).

A man buys a cycle for Rs. 1400 and sells it at a loss of 15%. What is the selling price of the cycle?

 On a certain sum of money the compound interest Rs. 318 is earned in 2 years. If the rate of interest is 12%, what is the principal amount? 

A man goes from point A to point B at a speed of 20 km/h and returns to point A at a speed of 30 km/h. What is his average speed for the entire journey?

 Sarang invested some money in HDFC at a 3% rate of interest. What would be the corresponding simple interest if, after 2 years, Sarang got Rs. 101.50 as compound interest?

 There are twenty four students in a certain class. For every nine girls there are three boys. How many girls and how many boys are there in the class? 

The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total price of 12 chairs and 3 tables is: 

A bank offers 6% compound interest calculated on a half-yearly basis. A customer deposits Rs. 1,500 each on January 1st and July 1st of a year. The amount of interest the customer would have gained by the end of the year is:

A mango vendor travels between two cities through 30 toll booths. He had 90 mangoes in 3 baskets, each basket with a maximum capacity of 30 mangoes. He has to pay the toll of 1 mango per basket per booth. If the vendor is intelligent, how many mangoes will he have when he reaches the destination?

A goods train leaves a station at a certain time and at a fixed speed. After 6 hours, an express train leaves the same station and moves in the same direction at a uniform speed of 90 km/h. The express train catches up with the goods train in 5 hours. Find the speed of the goods train.