The average weight of students in a class is 43 kg. Four new students are admitted to the class whose weights are 42 kg, 36·5 kg, 39 kg and 42·5 kg respectively. Now the average weight of the students of the class is 42·5 kg. The number of students in the beginning was
10
15
20
25
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