Quantitative Aptitude - Arithmetic Ability Questions

The radius of two circles is 3 cm and 4 cm. The distance between the centres of the circles is 10 cm. What is the ratio of the length of direct common tangent to the length of the transverse common tangent?

Find the value of '?' in 512 × 125 ÷ 15625 = 3125 × 25?

Five men or ten women can complete a job in 20 days. In how many days can 3 men and 4 women complete it?

If x2+1x2-6, then find the value of 2x(x-1)x3-x2-x+1

Which of the following is correct?

4*(-­0.1(5.5 + 8.5)) of 0.5 = ?

X can do a piece of work in 'p' days and Y can do the same work in 'q' days . Then the number of days in which X and Y can together do that work is

The mean of marks secured by 45 students in division A of class X is 69, 65 students of division B is 65 and that of 50 students of division C is 63. Find the mean of marks of the students of three divisions of Class X.