Quantitative Aptitude - Arithmetic Ability Questions

If x – (1/x) = 3, then what is the value of (2x4 + 3x3 + 13x2 – 3x + 2) / (3x4 + 3)?

If 9x+2 = 240 + 9x, the value of (8x)x is

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.

-7.5, 15, -30, 60, ? , 240

The ten's digit of a 2-digit number is greater than the units digit by 7. If we subtract 63 from the number, the new number obtained is a number formed by interchange of the digits. Find the number.

If x + y = 10 and xy = 4, then what is the value of x4 + y4?

By selling 175 pineapples, the gain is equal to the selling price of 50 pineapples. What is the gain percentage?

What is the value of 10% of 150% of 400?

X and Y are the mid points of sides AB and AC of a triangle ABC. If BC+XY=12 units, then BC-­XY is