Math

মোট 1015 টি প্রশ্ন

841 A batsman scored 110 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets?
842 A box is make in the form of a cube. If a second cubical box has inside dimensions three times those of the box, how many times as much does the second box contain?
843 A cylindrical rod of iron, whose height is equal to its radius, is melted and cast into spherical balls whose radius is half the radius of the rod. Find the number of balls.
844 A jar contains white, red and green marbles in the ratios 2:3:5. Six more green marbles are added to the jars, and then the ratio becomes 2:3: 7. How many white marbles are three in the jar?
845 A 40-meter long rope is cut into two unequal pieces. If one piece is 18 meter longer than the other, what is the length ( in meter ) of the shorter piece ?
846 A boat can travel from point A to point B and return back to point A in 9 hours. Speed of the boat in still water is 8 km/h and the speed of the stream is 4 km/h. Find the distance between A and B
847 A bus picks up a group of tourists at a hotel. The sightseeing bus travels 2 blocks north, 2 blocks east. I block south, 2 blocks east, and 1 block south. Where is the bus in relation to the hotel?
848 A football team is to be consisted out of 14 boys. In how many ways the team can be chosen so that the owner of the ball is always in the team?
849 A lame duck organization is one which needs
850 A and B are partners in a business. A contributes ¼ of the capital for 15 months and B receives 2/3 of the profit. Find for how long B’s money was used.
851 A boat can travel with a specd of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.
852 A can complete a piece of work in 12 days A, B and C can complete the work in 6 days. Efficiency of B is 0.5 times the efficiency of A. In how many days C can complete the work alone?
853 A fruit seller had some apples. He sold 40% apples and still has 420 apples left. Originally he had:
854 A makes an article for Tk. 120 and sells it to B at a profit of 25%. B sells it to C who sells it for Tk. 198 making a profit of 10%. What profit percent did B make?
855 A and B can do a work in 12 days. B can do the same work in 18 days. In how many days A can complete the 2/3 of the same work?
856 A boat sailing against a stream of river tanks 6 hours to travel 24km, while sailing with the stream it takes 4 hours to travel the same distance. What is the speed of the stream?
857 A can complete a project in 20 days and B can complete the same project in 30 days. A and B start working on the project together and A quits 10 days before the project is expected to be completed. How many days in total will the project take to complete?
858 A garden of 100m length and 60m width has a walkway of 2m width on every side. What is the area of the garden, in square meter, excluding the walkway?
859 A man buys doughnuts at the rate of Tk. 35 per 100 price and sells them at Tk. 7.20 per dozen. If the profit is Tk. 30, how many doughnuts did he buy?
860 A and B invest in business in the ratio 3: 2. If 5% of the total profit goes to charity and A’s share is Tk. 855, the total profit is:
861 A boat takes 19 hours to travel downstream from point A to point B and coming back to a point C midway between A and B. If the speed of the stream is 4 km/hr and the speed of the boat in still water is 14 km/hr, what is the distance between A and B?
862 A can do a job in 24 days, B in 9 days and C in 12 days. B and C together start the work but leave after 3 days. How much time was taken by A to complete the remaining work?
863 A garden of 100m length and 60mn width has a walkway of 2m width on every side. What is the area of the garden, in square meter, excluding the walkway?
864 A man can do a piece of work in 5 days, but with the help of his son, he can do it in 3 days. In what time can the son do it alone?
865 A and B together can complete a piece of work in 12 days, B and C can do it in 20 days and C and A can do it in 15 days. A, B and C together can complete it in
866 A boat takes 4 hours to cover a certain distance running downstream, while it requires 8 hours 48 minutes to cover the same distance. Find the ratio between the speed of the current and the speed of the boat?
867 A can finish a work in 5 days and B takes 4 days to do the same work. If the work is increased by 8 times, how many days will it take for both of them to finish the work if they work together?
868 A gentleman should be true ___ his words.
869 A man can reach a certain place in 40 hours. If he reduces his speed by 1/15th, he goes 5 km less in that time. Find the total distance covered by him.
870 A and B together can do a piece of work in 40 days. A having worked for 20 days, B finishes the remaining work alone in 60 days. In how many days shall B finish the whole work alone?