৫৪২
নিচের অক্ষরগুলোর মধ্যে বাম দিক থেকে অষ্টাদশ অক্ষরের বাম পাশের দশম অক্ষর কোনটি? ABCDEFGHIJKLMNOPQRSTUVWXYZ
উত্তর
H
৫৪৩
A train passes a man at 110 kmph running towards the train at the speed of 10 kmph. If it took 3 seconds to cross the man, what would be the length of the train?
উত্তর
100 m
৫৪৪
An aeroplane covers a certain distance at a speed of 250 kmph in 6 hours. To cover the same distance in 100 minutes, it must travel at a speed of-
উত্তর
900 km/hr
৫৪৫
A train passes two bridges of length 800 m and 400 m in 100 seconds and 60 seconds respectively. The length of the train is-
উত্তর
200 m
৫৪৬
A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is:
উত্তর
3 : 1
৫৪৭
Maruf is travelling on his cycle and he calculated to reach point A at 3 p.m. if he travels at 10 kmph, he will reach there at 1 p.m. if he travels at 15 kmph. At what speed must he travel to reach A at 2 p.m.
উত্তর
12 kmph.
৫৪৮
The ratio between the speeds of two trains is 5 : 8. If the second train runs 600 km in 5 hours, then the speed of the first train is -
উত্তর
75 kmph
৫৪৯
Speed of a boat in standing water is 18 kmph and the speed of the stream is 3 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is-
উত্তর
12 hour
৫৫০
The ratio between the speeds of a bus and bike is 5 : 8. If the bus travels 120 km in 2 hours, find the speed of the bike.
উত্তর
96 km/h