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CoffeeHead
No, he is not right.

Integer is a number that can be written without a fractional component, and 1 3/4 doesn't.

Here's an image for you to better understand. 
Ver imagen CoffeeHead
lolololololol421
No, he is not correct. That is because, an integer is a positive, or negative whole number. 1 3/4 is not a whole number. It is a fraction. So, not all of the numbers he listed are integers.