If A and B are two matrices such that AB is of order n × n, then which one of the following is correct?
A and B should be square matrices of same order.
Either A or B should be a square matrix.
Both A and B should be of same order.
Orders of A and B need not be the same.
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