Which one of the following is always odd for any q where is an integer ?

If x = a, then which of the following is not always true for an integer k.

Which of the following numbers always divides the difference between the squares of two consecutive odd integers?

Which of the following statements are always correct (where Q denotes the set of rationals)?

If a number N = x.bar(yz) where x,y and z are single digits with not more than one digit is zero. Then which of the following will be always be an integer?

Which of the following statements are true ? The sum of two integers is always an integer.

In which of the following , R.Q will always be less than one ?

In which of the following , R.Q will always be less than one ?

If p and q are positive integers, then which one of the following equations has p-sqrt(q) as one of its roots ?

In n is an even integer, which one of the following is an odd integer?