Question

how can we know that (3+1/2) is a rational number between 3 and 4?​

Answer 1

(3+1/2)=7/2

"a rational number between 3 and 4 is 1/2(3+4)=7/2". Hence, 13/4, 7/2, and 15/4 are the three rational number lying between 3 and 4.

We know that(3+1/2) is rational number lying between 3 and 4. Proved