What does the differential equation (y(dy/dx) + x = a), (where a is a constant) represent?
A set of circles having centre on the y-axis
A set of circles having centre on the x-axis
A set of ellipses
A pair of straight lines
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