Quantitative Aptitude - Arithmetic Ability Questions

If (cotAcotB - 1) / (cotB + cotA) = x, then the value of x is

If 7x + 2 ≥ x - 2 and 7 + 2x ≥ 3 + 3x; then x can take which of the following values?

Total surface area of a cube is 486 sq cm, find sum of length of all its edges?

If the number 247_679 is completely divisible by 9, then the smallest whole number in the place of the blank digit will be

Which of the following is NOT prime number?

Calculate the distance (in cm) of the chord from the centre of the circle, if the chord of length 48 cm is drawn in the circle of radius 25 cm.

A square playground measures 1127.6164 sq.m. If a man walks 2 9/20 m a minute, the time taken by him to walk one round around it is approximately.

ΔABC is right angled at B. BD is its altitude. AD = 4 cm and DC = 12 cm. What is the value of AB (in cm)?