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Aug 19, 2013



Feb 9, 2014

#### Find the missing frequencies in the following frequency distribution



Given, mean = 50.25
Sum of observations = 80
That is (60 + x + y) = 80
(x + y) = 20 … (1)
Mean = (2880 + 45x + 75y)/80
That is (50.25 × 80) = 2880 + ...

Oct 2, 2013



Feb 4, 2014



Oct 30, 2013



Oct 11, 2013

#### Find the length of the longest rod that can be placed in a room 12 m long, 9 m broad and 8 m high.



Given length l = 12 m
breadth b = 9 m and height h = 8 m
Longest rod that can be placed in a room is nothing but its diagonal.<...

Aug 11, 2014



Jan 9, 2014

#### A cone ,hemisphere and a cylinder stand on equal base and have same height .then ratio of their volume is? Show it.



Volume of cone = (1/3)πr2h
Volume of hemisphere = (2/3)

Nov 21, 2013