Which number is between 0.5 and 8/9?
option a: 7/24
option b.: 1/7
option c: 5/24
option d: 2/7

To know which number is between 0.5 and 8/9, let us convert all numbers in the same form, the decimal form. 8/9 is equivalent to 0.89.
Option A is 0.29. Option B is 0.14. Option C is 0.21 and option D is 0.29. From the given choices above, THERE IS NO CORRECT ANSWER. None of the choices given fits to be a number that is between 0.50 and 8/9. Hence, the given choices may be incorrect.

Correct sir/miss have a good day x < 3