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Subject Mathematics
2176. আবহাওয়ার অফিসের রির্পোট অনুযায়ী-২০১৫ সালের জুলাই মাসের ২য় সপ্তাহে বৃষ্টি হয়েছে মোট ৫ দিন। ঐ সপ্তাহে বুধবার বৃষ্টি না হওয়ার সম্ভবনা কত?
2193. The length of a rectangle is twice its breadth. If its length is decreased by 5 cm and breadth is increased by 5 cm, the area of the rectangle is increased by 75 sq. cm. Find the length of the rectangle.
2196. If 3 men or 6 boys can do a piece of work in 10 days, working 7 hours a day; how many day will it take to compete a piece of work twice as large with 6 men and 2 boys working together for 8 hours a day?
2198. Peter purchased a machine for Tk. 80,000 and spent Tk. 5000 on repair and Tk. 1000 on transport and sold it with 25% profit. At what price did he sell the machine?
2200. A can complete a journey in 10 hours. He travels first half of the journey at the rate of 21 km/hr and second half at the rate of 24km/hr. Find the total journey in km.