Quantitative Aptitude - Arithmetic Ability Questions

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If a = 3+23-2, b = 3-23+2 then a2+b2-ab ?

∆XYZ is right angled at Y. If tanX = 15/8, then what is the value of sinZ ?

A = (x8 – 1)/(x4 + 1) and B = (y4 – 1)/(y2 + 1). If x = 2 and y = 9, then what is the value ofA2 + 2AB + AB2?

Find the value of 'a' for which x+3x+a24 is a perfect square.

A spaceship travels at 1,260 km/h. How many metres does it travel in 1/10 th of a second?

12 men or 30 boys can complete a work in 72 days. How many days will 48 men and 24 boys will take to complete the same work?

In the first 36 overs of a cricket match, the run rate was 4.3 runs/over. Calculate the required run rate in the remaining 14 overs to reach the target of 271 runs?