Quantitative Aptitude - Arithmetic Ability Questions

If a - b = 10 and ab =-21, then what is the value of a3-b3 ?

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

In the following question, select the odd number pair from the given alternatives.

Find the odd one out among the following.

The flight fare between two cities is increased in the ratio 11:13. What is the increase (in Rs) in the fare, if the original fare was Rs 12100?

What is the value of tan­ -240°?

The average salary of male employees in a firm was Rs. 5200 and that of females was Rs. 4200. The mean salary of all the employees was Rs. 5000. What is the % of female employees?

P and Q can do a project in 12 and 12 days respectively. In how many days can they complete 50% of the project if they work together?