Quantitative Aptitude - Arithmetic Ability Questions

If x + y = 12 and x2 + y2 = 94, then xy is 

If 2x-2x=1 (x≠0),then the value of x3-1x3 is

In a mixture, ink and water are in the ratio of 8 : 5. If 24 litres of water is added to the mixture, then the new ratio becomes 8 : 11. What is the total quantity (in litres) of water in the new mixture?

O is the orthocentre of∆ABC, and if ∠BOC = 110° then ∠BAC will be

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

If a+1a2 = 3, then the value of  a3+1a3 is

If x = 3+13, then the value of x-12642x-1x-233 is

If a(x + y) = b(x - y) = 2ab, then the value of 2(x2 + y2)