From a solid cylinder whose height is 12 cm and diameter 10 cm a conical cavity of same height and same diameter of the base is hollowed out. The volume of the remaining solid is (cm³)approximately .Π=22/7

If A purchased 109 cars for Rs.2,64,89,071. How much does 1 car cost? 

If P : Q = 4 : 5 and P : R =2 : 3, then what is 3P : 4Q : 5R?

A housewife saved ₹ 2.50 in buying a dress on sale. If she spent ₹ 25 for the dress, approximately how much percent she saved in the transaction? 

When the square of a natural number subtracted from its cube, the result is 48. Find the number: 

If cos θ = $${1\over \sqrt{10}}$$, then tan θ is equal to.

The sum of the present ages of Varun and Kapil is 42 years. The ratio of their ages after 5 Years will be 15 : 11. What is the present age of Kapil? 

Mr. Dutta desired to deposit his retirement benefit of ₹3 lacs partly to a post office and partly to a bank at 10 % and 6 %  simple interests respectively. If his monthly interest income was ₹ 2000, then the difference of his deposits in the post office and in the bank was -