Question

which of the following is not rational number:
1) 0/5.
2)-3/-7.
3)3/9.
4)4.​

Answer 1

Answer:

2nd and 3rd are not rational.

1) 0/5

$\rarr \sf \: \frac{0}{5} = 0 \:(rational)$

2) -3/-7

$\rarr \sf \: \frac{ - 3}{ - 7} = \frac{3}{7} \: \red{( irrational)}$

3) 3/9

$\rarr \sf \: \frac{3}{9} = \frac{1}{3} \: \red{(irrational) }$

4) 4

$\rarr \sf \: 4 \: (rational)$