α and β  is two root of a equations $$2x^2-7x+ 12=0 $$ then the value of $$ {α \over β }  + {β \over α }=? $$

A sum of Rs. 2000 at 40% per annum compounded annually. Calculate the interest for the third year at compound interest.

The sum of two numbers is 232 and their HCF is 29. What is the numbers of such pairs of numbers satisfied the above condition?

Study the graph carefully and answer the following questions.

The production of State D in 1993-94 is how many times its production in 1994-95 ?

The value of $$ cot\ {π\over 20}\ cot{3π\over 20} \cot{5π\over20}\ cot{7π\over 20}\ cot {9π\over20}$$ is:

On dividing a certain number by 342 we get 47 as remainder. If the same number is divided by 18, what will be the remainder?

If  $${3-5x\over 2x}+{3-5y\over 2y}+{3-5z\over 2z}=0$$ then the value of  $${2\over x}+{2\over y}+{2\over z}$$ is:

The cost price of two items P and Q are equal. If item P sold at 40% profit and item Q sold at 20% less than the selling price of item P, then the total profit is ?