(A): 6.34*100 = 634 so 6.34 = 634/100 a ratio of two integers and so a rational number.
(B): 6.34 is a terminating decimal - with two non-zero digits after the decimal point. So again, it is a rational number.
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Yes, .634 is a rational number
Johann Heinrich Lambert
It's the ratio of 121 to 1, so it's rational. I think the square of any rational number is a rational number. In fact, I'm sure of it, because I know how I could prove it.
No, they are not. 1/2 is a ratio of two integers and so it is rational. But it is not a whole number.
No.