The following table shows the marks of 90 students in a test of 80 marks: Marks Number of students 1–10 5 11–20 8 21–30 10 31–40 13 41–50 18 51–60 17 61–70 12 71–80 7 The percentage of students who have obtained less than or equal to 50% marks is

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