Quantitative Aptitude - Arithmetic Ability Questions

What is the reflection of the point (2, -3.5) in the y-axis?

If 3x+22x+1 = a2x+1+bx+2 be an identity, then the value of b

If x -­ y = ­7 and x + y = 13, then x2 - y2 is

Find the marked price if the selling price is Rs. 9250 and discount is 7.5%.

If 7 times the seventh term of an Arithmetic Progression (AP) is equal to 11 times its eleventh term, then the 18th term of the AP will be

What is the value of 9991 x 10009?

One diagonal of a rhombus is half the other. If the length of the side of the rhombus is 20 cm, what is the area of the rhombus?

The ratio of present ages of Anil and Aakash is 4 : 5. Three years later their ages will be in ratio 7 : 8. What is the present age (in years) of Anil?