Quantitative Aptitude - Arithmetic Ability Questions

Which of the following is correct?

Find out the odd word/letters/number/number pair 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 ΔABC is 100 sq cm, what is the area (in sq cm) of quadrilateral BDEC?

A team of 8 persons joins in a shooting competition. The best marksman scored 85 points. If he had scored 92 points, the average score for the team would have been 84. The number of points the team scored was

The least number that must be substracted from 63520 to make the result a perfect square is

What is the distance between the points (3 , 6) and (-2 , -6)?

The average of 12 numbers is 9. If each number is multiplied by 2 and added to 3, the average of the new set of numbers is

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