Quantitative Aptitude - Arithmetic Ability Questions

If (x - 13)2 + (y - 4)2 = 0, then the value of y + xy - x ?

If k is the largest possible real number such that p4+q4=(p2+kpq+q2)(p2-kpq+q2),then the value of k is

If 2cos2A - 1 = x, then the value of x is

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

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

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.

Sum of a fraction and thrice of its reciprocal is 73/20. What is the fraction?

Expand and simplify (x + 5)2 + (x - 3)2