In the following figure, rectangle represents Lawyers, circle represents Bakers, triangle represents Singers and square represents Golfers. Which set of letters represents Golfers who are not Bakers ?
A shuttle cock used for playing badminton has the shape of a frustum of a cone mounted on a hemisphere. The external diameters of the frustum are 5cm and 2cm, the height of the entire shuttle cock is 7cm. Find the external surface area.
The expenses of a person increase by Rs. 50000 for every month in February and March. If his expenses in January was Rs. 50000, calculate his average expenditure (in Rs.) from January to March.