The arithmetic mean of 1, 8, 27, 64, … up to n terms is given by
n(n + 1)/2
n(n + 1)²/2
(n(n + 1)²)/4
(n²(n + 1)²)/4
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