Quantitative Aptitude - Arithmetic Ability Questions

Select the odd word/letters/number/number pair from the given alternatives.

If tan(A/2) = x, then the value of x is

Find the value of 'y' if y84 = 225

What is the equation of the line whose y-intercept is -3 and makes an angle of 45° with the positive x-axis?

If the perimeter of a semicircle is 108 cm, then find its area (in cm²).

If the side of a square is increased by 20%, then what will be the percentage increase in its perimeter?

The ratio of two numbers is 2 : 3. If the sum of both the numbers is 75, then what is the larger number among both the numbers?

If 4x + 1x = 5, (x≠0), then the value of 5x4x2+10x+1 is