Which of the below probability distribution has same mean and variance?
Poisson distribution is the only distribution where E(X) = VAR (X)=Lambda.
A train takes 5 seconds more to cross a 180-metre-long platform than it takes to cross a pole. If a car running at the speed of 42 m/s takes 80 seconds ...
Two trains of same length are running in parallel tracks in the same direction with speed 80 km/hr and 110 km/hr respectively. The latter completely cro...
Two trains running in opposite directions cross a pole in 25 seconds and 15 seconds respectively and they cross each other in 21 seconds.Find the ratio ...
Two trains A and B, were proceeding in the same direction on parallel tracks at 23 km/hr and 77 km/hr respectively. A man noticed that it took exactly 1...
Two trains A and B, were proceeding in the same direction on parallel tracks at 25 km/hr and 79 km/hr respectively. A man noticed that it took exactly 1...
Two trains ‘K’ and ‘L’ of equal lengths are running on parallel tracks at speeds of 45 m/s and 55 m/s, respectively. If they can cross each othe...
Two trains of same length are running in parallel tracks in the same direction with speed 50 km/hr and 120 km/hr respectively. The latter completely cro...
A train can cross a pole in 32 seconds. While if the train increased its speed by 45% then time taken by it to cross 289 metres long platform is 42 seco...
A Train Rajdhani Express leaves Kanpur station at 6 am and reaches Lucknow station at 10 am. Another Train Shatabdi Express leaves Lucknow station at 8 ...
Two trains of same length are running in parallel tracks in the same direction with speed 56 km/hr and 110 km/hr respectively. The latter completely cro...
