How many digits are in the repeating cycle of 17/27 ?

To find the repeating cycle of the decimal representation of a fraction, we divide the numerator (17) by the denominator (27) using long division:

0.629 629 629 629 629 629...

Here, the repeating cycle is the series of digits that repeats indefinitely: 629. Thus, there are three digits in the repeating cycle of 17/27.