Quantitative Aptitude - Arithmetic Ability Questions

In triangle ABC, a line is drawn from the vertex A to a point D on BC. If BC = 9 cm and DC = 3 cm, then what is the ratio of the areas of triangle ABD and triangle ADC respectively?

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.

The centroid of an equilateral triangle ABC is G. If AB is 6 cms, the length of AG is

All sides are congruent in a _____.

The ratio between the weights of gold and silver in an alloy is 17:3. If the weight of silver in the alloy is 2.7 gm, find the weight of gold in the alloy?

What is the value of (3/5 + 7/9)?

Δ DEF is right angled at E. If m∠D = 45%., then Cosec F =

Product of 9b2, 3a2 and 4ab is