Quantitative Aptitude - Arithmetic Ability Questions

The least six digit number which is a perfect square is

What least number must be added to 213, so that the sum is completely divisible by 9?

Of the 3 numbers whose average is 64, the first number is 1/3 times the sum of other 2. The first number is

If P : Q = 9 : 7, then what is the value of (P – Q) : (P + Q)?

Which of the following is correct?

If cos -300° = x, then the value of x is

Select the odd word/letters/number/number pair from the given alternatives.

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.