Question

Why is 1.23bar a rational number?

Answer 1

Step-by-step explanation:

1.23 is a rational number because it is terminating and reccuring....

Answer 2

first we take x

x = 1.23 23 23 23 23......

then it's in hundredth place

so we take

100x = 123 . 23 23 23 23

for subtracting ( 1) and ( 2) we get

100x = 123 . 23 23 23 23

- x. = -1 . 23 23 23 23

99x. = 122 .0000

x = 122 / 99

hence answer is 122 /99