Under which one of the following conditions are the lines x = ay + b; x = ey + f; z = gy + h perpendicular?
ae + cg - 1 = 0
ae + bf - 1 = 0
ae + cg + 1 = 0
ag + ce + 1 = 0
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