গাণিতিক যুক্তি
মোট ১৯৫৮২ টি প্রশ্ন · উত্তর ও ব্যাখ্যাসহ · বিনামূল্যে
১৮৫৮১–১৮৬০০ দেখানো হচ্ছে, মোট ১৯৫৮২ টির মধ্যে
- If a train takes 1.5 sec to cross a telegraph post and 1.75 to overtake a cyclist racing along the parallel road to the track at 10 m/s , then the length of the train is: MCQ
- Two trains start from the same starting points and move towards the same destination. The first one starts half an hour earlier than the second one. The first one runs at a speed of 90 km/hr while the second one runs at 30 km/hr faster. At what distance from the starting point will the two trains meet? MCQ
- A train, 800metre long is running with a speed of 78 km/hr. It crosses a tunnel in 1 minute. What is the length of the tunnel (in metres)? MCQ
- Two trains, 130 and 110 meters long, are going in the same direction. The faster train takes one minute to pass the other completely. If they are moving in opposite directions, they pass each other completely in 3 seconds. Find the speed of the faster train. MCQ
- The distance between two stations is 240 km. When it strikes 5 pm in the clock, a train starts from each of these stations and travels towards the other one. They meet at a junction after 12 hrs. One of the trains is slower to the other one by 14km/hr. Find the speed of the slower train. MCQ
- Train A passes a lamp post in 9 seconds and 700 meter long platform in 30 seconds. How much time will the same train take to cross a platform which is 800 meters long? MCQ
- Two stations P and Q are 110 km apart on a straight track. One train starts from P at7 a.m. and travels towards Q at 20 kmph. Another train starts from Q at 8 a.m. and travels towards P at a speed of 25kmph. At what time will they meet? MCQ
- Two trains of lengths 120 m and 90 m are running with speed of 80 km/hr and 55 km/hr respectively towards each other on parallel lines. If they are 90 m apart, after how many seconds will they cross each other? MCQ
- A train is travelling at 48 kmph. It crosses another train having half of its length, travelling in the opposite direction at 42 kmph, in 12 seconds. It also passes a railway platform in 45 seconds. What is the length of the platform? MCQ
- If a train stops on the way, its speed is 35 km/hr but if it doesn't, its speed is 40 km/hr. Find the number of minutes the train halts per hour. MCQ
- Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train is 120 metres, in what time (in seconds) will they cross each other travelling in the opposite direction? MCQ
- What is the speed of a train if it overtakes two persons who are walking in the same direction at the rate of a m/s and (a + 1) m/s and passes them completely in b seconds and (b + 1) seconds respectively? MCQ
- A dog sees a cat 80 m away. The cat runs at a speed of 5 m/s while the dog chases it at a speed 2 m/s more than that of the cat. Before the dog is able to catch the cat, how much distance has it already run? MCQ
- Rahim and Shafiq are standing at two ends of a room with a width of 30 m. They start walking towards each other along the width of the room with a speed of 2 m/s and 1 m/s respectively. Find the total distance travelled by Rahim when he meets Shafiq for the third time. MCQ
- A man decided to cover a distance of 6 km in 84 minutes. He decided to cover two-thirds of the distance at 4 km/hr and the remaining at some different speed. Find the speed after the two-third distance has been covered: MCQ
- Joy travelled from his town to city. He went to the city by bicycle at the speed of 25 km/h and came back at the speed of 4 km/h. If he took 5 hours and 48 min to complete his journey, what is the distance between town and city? MCQ
- Rashed walks at a speed of 12 km/h. Today the day was very hot so walked at ⅚ of his average speed. He arrived at his school 10 minutes late. Find the usual time he takes to cover the distance between his school and home? MCQ
- In a kilometer race, A beats B by 100 meters. B beats C by 100 meters. By how much meters does A beat C in the same race ? MCQ
- In a 100 m race A runs at a speed of 1.66 m/s. If A gives a start of 4m to B and still beats him by 12 seconds. What is the speed of B? MCQ
- A man takes 6 hours 15 minutes walking a distance and riding back to starting place. He could walk both ways in 7 hours 45 minutes. The time taken by him to ride back both ways is - MCQ