If `x^2 + ax + b` is an integer for every integer x then

If x^2+ax+b is an integer for every integral value of x and roots of equation x^2+ax+b=0 are rational then is (A) both roots are integers (B) one is an integer and the othe is not (C) no root is an integer (D) one root is zero and other is non zero

For some integer n every odd integer is of the form

If p is an integers, then every square integer is of the form

For some integer q, every odd integer is of the form

For some integer m, every even integer is of the form:

For some integer q , every odd integer is of the form

For some integer q , every odd integer is of the form

For some integer m , every even integer is of the form

For some integer m , every even integer is of the form