Quantitative Aptitude - Arithmetic Ability Questions

What is the value of (1 + cotA)2 + (1 -­ cotA)2?

Compute 33800/520/5

The profit (in Rs.) after selling an article for Rs.524 is the same as the loss (in Rs.) after selling it for Rs.452. The cost price of the article is:

The average marks obtained by a group of 10 students were 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.6. What were the average marks obtained by the student who left and the one who joined?

A table was sold at a profit of 10%. If its cost price was 5% less and it was sold for Rs. 7 more, the gain would have been 20%. Find the cost price of the table.

The radius of the circle circumscribing the three vertices of an equilateral triangle is 12 cm. Determine the height (in cm) of the equilateral triangle

A person bought an item for Rs. 1500 and sold it at a profit of 12%. What was the selling price of the item?

If 1/√(1 -­ sin2A) = x, then the value of x is