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221.A letter lock consists of three rings each marked with six different letters. The number of distinct unsuccessful attempts to open the lock is at the most____?
222.A man buys 10 articles for Rs. 8 and Sells them at the rate of Rs. 1.25 per article. His gain is:____?
223.A man buys Rs. 20 shares paying 9% dividend. The man wants to have an interest of 12% on his money. The market
224.A man buys Rs. 50 shares in a company which pays 10% dividend. If the man gets 12.5% on his investment, at what price did he buy the shares ?
225.A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is____?
226.travels first half of the journey at the rate of 21 km/hr and second half at the rate of 24 km/hr Find the total journey in km
227.A man could buy a certain number of notebooks for Rs.300. If each notebook cost is Rs.5 more, he could have bought 10 notebooks less for the same amount. Find the price of each notebook?
228.A man covered a certain distance at some speed. If he had moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. What is the the distance in km?
229.A man covers a distance of 20 km in 3.5 hours partly by running and partly by walking. If he walks at 4 kmph and runs at 10 kmph, find the distance he covers by walking.
230.A man deposited Rs 6000 in a bank at 5% P.a simple interest another man deposits Rs 5000 at 8% P.a Compounded interest. After 2 years the difference of their interest will be____?