১৫০৩৫
You are looking at a billboard 40 m away with an angle of elevation of 30°. At what height is the billboard?
উত্তর
20
১৫০৩৬
a, b, c, d and e are five consecutive integers in increasing order of size. Which one of the following expression is not odd?
উত্তর
ac + e
১৫০৩৮
A train of 220 m long is moving at 45 km/h. The time taken by the train to cross a tunnel of 260 m long is-
উত্তর
38 sec