A fruitseller sells mangoes at the rate of Rs. 9 per kg and thereby loses 20%. At what price per kg, he should have sold them to make a profit of 5%?

How many meaningful English words can be made from the letters ADER, using each letter Only once in each word?

In a certain code ‘where have you been‘ is written as ‘been 4 have 3 where 2 you 1’ and ‘visiting London this summer‘ is written as ‘London 4 summer 3 this 2 visiting 1’ How will ‘repair may computer yesterday‘ be written in the same code?

If a^x=b^y=c^z, (b/a)=(c/b) and a, b and c are not equal, then what is the value of 2z/(x+z)?

3 x 0.3 x 0.03 x 0.0003 x 30 =?