An aeroplane is observed to be (b) 17approaching the airport. It is at a distance of 10 km from the point of observation on the ground and makes an angle of elevation 0. If the aeroplane is at a height of 8 km above the ground, then which one of the following is correct ?
0 < θ < 30°
30° < θ < 45°
45° < θ < 60°
60° < θ < 90°
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
Miscellaneous · Easy
Which among the following events happened earliest ?
Miscellaneous · Easy
An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
Miscellaneous · Easy