Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd letter from the given alternatives.

Find the roots of the quadratic equation 27x2 + 57x -­ 14 = 0

The area of the circle with radius Y is W. The difference between the areas of the bigger circle (with radius Y) and that of the smaller circle (with radius X) is W'. So x/y is equal to

In a school 60% of the students are girls. If number of boys is 480, then what is the total number of students in the school?

The areas of a circle and square are equal. What is the square of the ratio of length of diameter to the length of diagonal?

The total cost of a stove with cooker was Rs 13,125. The cooker was sold at a profit of 30% and the stove at a loss of 20%. If the sale price was the same in both the items, then the cost price of the cheaper item was

U and V started a business by investing amounts Rs 184000 and Rs 224000 respectively. If U’s share in the profit received at the end of year is Rs 20700, then what will be the total profit (in Rs) earned by them together?

A solid has 12 vertices and 30 edges. How many faces does it have?