Question

express 0.621(bar) in form of p/q form

Answer 1

$let \: x = 0.621621...... \: \\ 1000x = 1000 \times 0.621621..... \: (multiplying \: both \: sides \: by \: 1000 \\ 1000x = 621.621621..... \\\\ subtrcting \: (1) \: from \: (2) \\ \\ 1000x = 621.621621..... \\ \: \: \: \: \: \: \: \: x = \: \: \: \: \: \: 0.621621... \\ = = = = = = = = = = = = = = \\ \: \: \: \: 999x = 621.000000 \\ \\ 999x = 621 \\ x = \frac{621}{999 } \\ x = \frac{9}{111}$
x= 3/37

Answer 2

answer is

621/999

hope this helps you..