2
You propose (M+1)/M > 1
2
Yes, by definition.
There is none, because there is always a greater integer.
The sum of zero and a negative integer can never be zero - it will always be negative and nonzero. Although zero is also an integer, it is neither negative nor positive and cannot be the other integer used.
Not always because it could be less than 0 as for example -3 because an integer is a whole number without decimals or fractions
A rational number is always the result of dividing an integer when the divisor is nonzero.
2
No.
Yes, it is.
Yes.
Yes.
Yes, always. That is the definition of a rational number.
Yes, by definition.
Because that is how a rational number is defined!
I had this name question for homework :| no
Because that is how a rational number is defined!
There is none, because there is always a greater integer.