How many digits long could the repeating cycle of a repeating decimal B of the denominator of the rational number is 7

Answer 1

If the denominator of a rational number is 7, then in decimal form it would be written as a repeating decimal with a repeating cycle of 6 digits. This is because 7 is a prime number and the repeating cycle of any repeating decimal with a prime denominator is always equal to one less than the denominator. Therefore, the repeating cycle of B would be 6 digits long.