Two men are running in the same direction with a speed of 6 km per hour and \(7\frac{1}{2}\) m km per hour. A train running in the same direction crosses in 5 sec and \(5\frac{1}{2}\) sec respectively. The length and the speed of the train are respectively.
1). 22.92 m (approximately) and 22 km/hour
2). 82.5 m (approximately) and 22.5 km/hour
3). 22.90 m (approximately) and 20.5 km/hour
4). 22.92 m (approximately) and 22.5 km/hour
The bluish colour of water in deep sea is due to _______.
1). The Presence of algae and other plants found in water
2). Reflection of sky in water
3). Scattering of light
4). Absorption of light by the sea
Which of the following is an ore of Cadmium?
1). Cassiterite
2). Greenockite
3). Calamine
4). Cinnabar
A train is travelling with a speed of 62 kmph. To cross a platform it takes 54 s. If the length of the train is 273 m, what is the length of the platform?
1). 657 m
2). 565 m
3). 677 m
4). 583 m
In the following question, by using which mathematical operators the expression will become correct?
22_22_11_11 = 55