The sum of the first k terms of a series S is 3k^2 + 5k. Which one of the following is correct?
The terms of S form an arithmetic progression with common difference 14.
The terms of S form an arithmetic progression with common difference 6.
The terms of S form a geometric progression with common ratio 10/7
The terms of S form a geometric progression with common ratio
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