গাণিতিক যুক্তি
মোট ১৯৫৮২ টি প্রশ্ন · উত্তর ও ব্যাখ্যাসহ · বিনামূল্যে
১৭৮২১–১৭৮৪০ দেখানো হচ্ছে, মোট ১৯৫৮২ টির মধ্যে
- A man can row 12 km/hr in still water. If the speed of the current is 4 km/hr, he takes 3 hours more upstream than downstream. What is the distance (in km)? MCQ
- Two trains A and B start running together from the same point in the same direction, at the speed of 60 kmph and 72 kmph respectively. If the length of each of the trains is 210 meters, how long will it take for B to cross train A? MCQ
- Two trains are running in opposite directions with the same speed. If the length of each train is 150 metres and they cross each other in 15 seconds, then the speed of each train (in km/hr) is: MCQ
- The speed of the boat in still water is 5 times that of current, it takes 1.1 hour to row to point B from point A downstream. The distance between point A and point B is 26.4 km. How much distance (in km) will it cover in 330 minutes upstream? MCQ
- Two trains 180 m and 170 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is: MCQ
- A boat takes 6 hours to cover a distance while travelling upstream, whereas while travelling downstream it takes 4 hours. If the speed of the current is 6 kmph, what is the speed of the boat in still water? MCQ
- A man can row 34/3 kmph in still water and finds that it takes him thrice as much time to row up than as to row down the same distance in the river. The speed of the current is: MCQ
- A train takes 50 seconds to cross the 204 m long bridge. If the same train takes 20 seconds to cross a board, then tell the length of the train. (In meters) MCQ
- Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are open in how many hours will the tank? MCQ
- A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two third of the total time, to cover the remaining distance in the remaining time, his speed (in km/hr.) must be MCQ
- Two pipes A and B together can fill a tank in 6 hours. If pipe A can fill 5 hours faster than pipe B, in how many hours pipe B alone can fill the tank? MCQ
- A man can reach a certain place in 30 hours .If the reduces his speed by 1/15th, he goes 10 km less in that time. Find his speed. MCQ
- A man complete a journey in 10 hours. He travels first half of the journey at the rate of 16 km/hr and second half at the rate of 24 km/hr. Find the total journey in km. MCQ
- An outlet pipe can empty a cistern in 6 hours. In what time will it empty 2/3 part of the cistern? MCQ
- The ratio between the speeds of two trains is 8 : 9. If the second train runs 432 km in 4 hours, then the speed of the first train is: MCQ
- A tap can fill a tank in 12 hrs. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely? MCQ
- With an average speed of 50 km/hr a train reaches its destination in time. If it goes with an average speed of 40 km/hr, it is late by 24 minutes. The total journey is - MCQ
- Two pipes A and B can fill a tank in 18hrs and 6hrs respectively. If both the pipes are opened simultaneously, how much time will be taken to fill the tank? MCQ
- In covering a certain distance, The speeds of A and B are in the ratio of 5 : 6. A takes 30 minutes more than B to reach the destination. The time taken by A to reach the destination is- MCQ
- One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 18 minutes, then the slower pipe alone will be able to fill the tank in: MCQ