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1. On selling 17 balls at Rs 720, there is a loss equal to the cost price of 5 balls. What is the cost price of a ball?
2. At a game of billiards, A can give B 15 points in 60 and A can give C to 20 points in 60. How many points can B give C in a game of 90?
3. In a 100 m race, A can beat B by 25 m and B can beat C by 4 m. In the same race, A can beat C by:
4. What annual payment will discharge a debt of Rs. 6450 due in 4 years at 5% per annum?
5. A man sells two houses at the rate of Rs. 1.995 lakh each. On one he gains 5% and on the other, he loses 5%.

What is his gain or loss percent in the whole transaction?
6. A shopkeeper sells his goods at cost price but uses a weight of 800 gm instead of kilogram weight. What is his profit percentage?
7. A material is purchased for Rs. 600. If one fourth of the material is sold at a loss of 20% and the remaining at a gain of 10%, find out the overall gain or loss percentage?
8. A can run 220 metres in 41 seconds and B in 44 seconds. By how many seconds will B win if he has 30 metres start?
9.The least number of complete years in which a sum of money put out at 20% compound interest will be more than doubled is
10. In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?

Thank you.