Find compound interest on Rs. 50000 at 12 % per annum for 6 months, compounded quarterly. 

Subjects, there were 9 boys and some girls. In a test, the mean score obtained by the boys was 13 while that obtained by the girls was 15. If the overall average was 14.28, what was the total number of students in the class? 

The digit in the unit's place of the number represented by (7⁹⁵ - 3⁵⁸) is: 

The lengths of one side of a rhombus and one of the two diagonals are 6 cm each. Find the area of the rhombus (in cm²). 

The ratio 75: 125 in its simplest form is written as: 

If P is 15 years old now and Q will be 26 years old after 6 years, what is the ratio of their percentages? 

Mohan gets 3 marks for each correct sum and loses 2 marks for each wrong sum. He attempts 30 sums and obtains 40 marks. The number of sums solved correctly is:

If a man estimates his loss as 20% of the selling price, then his loss percent is: