Quantitative Aptitude - Arithmetic Ability Questions

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

The area of the triangle whose vertices are given by (2,4), (-3,-1) and (5,3) is

A kite is flying at a height of 50m. If the length of string is 100 m then the inclination of string to the horizontal ground in degree measures is

If Tan A = 15/8 and Tan B = 7/24, then Tan (A - B) = ?

What is the sum of the first 11 terms of an arithmetic progression if the 4th term is 11 and the 7th term is -4?

In a right angled triangle ΔDEF, if the length of the hypotenuse EF is 12 cm, then the length of the median DX is

What are the components of X6 - X4 - X5 - X4 + X2 - 4?

The upper part of a tree broke at a certain height makes an angle of 60 ° with the ground at a distance of 10 m. from its feet. The original height of the tree was