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

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

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?