Quantitative Aptitude - Arithmetic Ability Questions

If x = 5 + 15 - 1 & y = 5 - 15 + 1, then find the value of x2 - y2.

If -3[1-(x/2)] + 5x/3 = 1/6, then what is the value of x?

Product of digits of a 2-digit number is 27. If we add 54 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

What is the value of Cot 45° - (1/√3)Cosec 60°?

If cot 135° = x, then the value of x is

3cosA is equal to

If x + 1x = -2, then the value of x631 + 1x632?

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.