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Is 4/7 An Irrational Number? [Solved]

Yes, 47 is a rational number. By definition, a rational number is a number that can be written as a fraction, ab , where a and b are both integers. Our number 47 is a fraction with numerator, 4, and denominator, 7, and 4 and 7 are both integers.

The 3-4-7 miracle. Why is this one not super famous?

I got sidetracked again by a puzzling little mathematical miracle. And, as usual, I could not help myself and just had to figure it out.

Proof that the square root of ANY integer is irrational (besides perfect squares)

Forget proving that the square root of 2 is

Introduction to rational and irrational numbers | Algebra I | Khan Academy

Learn what rational and