Quantitative Aptitude - Arithmetic Ability Questions

In ∆ABC two medians BE and CF intersects at the point O and P,Q are the midpoints of BO and CO respectively. If the length of PQ=3cm, then the length of FE will be

If 2x2+2y2=4a the find the value of 2ax2-a+2ay2-a

In a mixture, water and milk are in the ratio of 3 : 5. In the second mixture, the ratio of water and milk is 9 : 11. If these two mixtures be mixed to form anew mixture in which water and milk are in ratio 5 : 7, then what is the ratio of these two mixtures in the new mixture?

In a ∆ABC, BC is extended upto D, ∡ACD =120°, ∡B = 1/2 A. Then ∡A is

If x = (√2 + 1)/(√2 – 1), then what is the value of (x5 + x4 + x2 + x)/x3 ?

If 12x = 192- 112, what is the value of x?

If √(sec2A - 1)/secA = x, then the value of x is

If u : v = v : w, then what is the value of u4 : v4?