Quantitative Aptitude - Arithmetic Ability Questions

A ladder 20 m long is leaning against a vertical wall. It makes an angle of 30 deg with the ground. How high on the wall does the ladder reach?

Convert binary 10110 to decimal.

Sum of a fraction and thrice of its reciprocal is 73/20. What is the fraction?

The third proportional of the following numbers (x - ­y)2, (x2 - y2)2 is

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

If 5x - ­5(3x ­- 2) < 4x -­ 1 < 2 + 2x, then x can take which of the following values?

ΔDEF is right angled at E. If m∠D = 45°, then find the value of (tanF + 1/3).

Which of the following is NOT prime number?