From the given numbers, let's determine the number which is a rational and a real number, but not an integer.
• A rational number is a number that can be expressed as the ratio of two integers.
• A real number is a number that can be positive or negative and can be placed on a number line.
• An integer is a whole number that can be positive, negative or zero. A fraction is not an integer.
Now, let's verify the numbers from the given list.
• √2
This number is NOT a rational number. So it is incorrect.
• -5
This number is an integer. Hence it is not the correct answer.
• 5/7
This number is a rational number.
It is also a real number.
A fraction is not an integer. Hence 5/7 is not an integer.
Therefore, the number which is rational and a real number but not an integer is 5/7.
ANSWER:
D. 5/7