What will be the compound interest of Rs 160000 payable half yearly at 10% per annum in 2 years?

6 kg sugar costing Rs. 10/kg is mixed with 4 kg sugar costing Rs. 15/kg. What is the average cost of the mixture per kilogram?

Evaluate 743 x 999.

A sum triple itself in 9 years at simple interest. Find the rate of interest per annum is.

What is the perimeter of a square inscribed in a circle of radius 5 cm?

For what value of ‘y’, $$ {x^{2}+{1\over12}{x}+y^{2}}$$ is perfect square?

The probabilities of solving a problem by three students A, B and C are  $$3\over 7$$, $$5\over 9$$ and $$1\over 5$$ respectively. The probability that problem will be solved is:

Directions : In an Institution there are 800 students. Students use different modes of transport for going to the institution and return. The given pie diagram represents the requisite data. Study the diagram carefully and answer the questions.

The number of students who do not use institute bus is