For the variables x and y, the two regression lines are 6x + y = 30 and 3x + 2y = 25. What are the values of x̄, ȳ and r respectively?
20/3, 35/9, -0.5
20/3, 35/9, 0.5
35/9, 20/3, -0.5
35/9, 20/3, 0.5
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