If a = (2, 1, -1), b = (1, -1, 0), c = (5, -1, 1), then what is the unit vector parallel to a + b - c in the opposite direction?
(i + j - 2k)/3
(-i - 2j + 2k)/3
(2i - j + 2k)/3
None of the above
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