In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.

I. x² + 7x + 10 = 0

II. y² + 5y + 4 = 0

If $$ {(x-2)^{2}+(y-{1\over2})^{2}}=0$$, then the value of $$ {x\over y}$$ 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 

A certain sum of money yields Rs. 1261 as compound interest for 3 years at 5% per annum. The sum is: 

What is the value of $${cos^2A\over {1+sinA}}$$?

Successive discounts of 10% and 30% are equivalent to a single discount of : 

If p = 8.15, q = 9.06 and r = −17.21, then the value of p³+q³+r³-3pqr

The diameters of two circles are 12 cm and 20 cm, respectively and the distance between their centres is 16 cm. Find the number of common tangents to the circles.