Quantitative Aptitude - Arithmetic Ability Questions

 In the following question, select the odd letter/letters from the given alternatives.

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

If x -­ y = ­7 and x + y = 13, then x2 - y2 is

What should be the missing digit so that the number 275_476 becomes exactly divisible by 11?

The HCF of two numbers is 12 and their LCM is 72. If one of the two numbers is 24, then the other number is

If 2x+ 4(x - 3) < -2 - x < 2x - 1, then find the value of x.

In ∆ ABC, the height CD intersects AB at D. The midpoints of AB and BC are P and Q respectively. If AD = 8 cm and CD = 6 cm, then the length of PQ is?

A, B and C can finish a job working alone in 20, 30 and 60 days respectively. They all work together for 1 day, then A and B quit. How many days C working alone will take to finish the remaining part of the job?