In the following figure, rectangle represents Plumbers, circle represents Bakers, triangle represents Jugglers and square represents Joggers. Which set of letters represents Plumbers who are either Bakers or Jugglers?
The angle of elevation of an aeroplane from a point on the ground is 60 deg. After flying for 30 seconds, the angle of elevation changes to 30 deg. If the aeroplane is flying at a height of 4500 m, then what is the speed (in m/s) of aeroplane?
Registration for Industrial design is not made. For instance, if Coca Cola is making bottle for soft drink then Pepsi can also make same designed bottles for its own soft drinks.