Quantitative Aptitude - Arithmetic Ability Questions

The smallest number, which should be added to 756896 so as to obtain a multiple of 11, is

A batsman makes a score of 111 runs in the 10th match and thus increases his average runs per match by 5. What will be his average after the 10th match?

Three solid spheres have their radii r1, r2 and r3. The spheres are melted to form a solid sphere of bigger radius. Then the radius of the new sphere is

A and B together do a job in 15 days and A alone could do the same job in 20 days. How many days would B take to do half the job if he worked alone?

X is 25% more efficient than Y. If Y alone can make a chair in 10 days, then X alone can make the chair in how many days?

Select the odd word from the given alternatives.

Find the odd word/letters/number from the given alternatives.

If cosx.cosy + sinx.siny = -1 then cosx + cosy is