If the magnitude of the sum of two non-zero vectors is equal to the magnitude of their difference, then which one of the following is correct?
The vectors are parallel
The vectors are perpendicular
The vectors are anti-parallel
The vectors must be unit vectors
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