Quantitative Aptitude - Arithmetic Ability Questions

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 396, then what is the difference between the first and the third number?

P and Q can do a project in 20 and 12 days respectively. In how many days can they complete 40% of the project if they work together?

What is the value of 5/9 + 7/8?

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

Find the odd numbers/letters/numbers from the given alternatives.

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

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:3 and area of ΔADE is 4 sq cm, what is the area (in sq cm) of quadrilateral BDEC.

What least number must be subtracted from 518, so that the sum is completely divisible by 13?