If all 3 digits are repeating then as a fraction it is 215/999
It is a repeating decimal that starts: 0.363636... (repeating the digits '36' forever).
It is terminating - after two decimal digits.
1023459
A repeating decial
If you include the combination which comprises no numbers (the empty set), then there are 16: 1 with no digits 4 with 1 digit 6 with 2 digits 4 with 3 digits, and 1 with 4 digits.
A repeating decimal is a rational number. Its value is(the repeating set of digits)/(as many 9s as there are digits above).
It only has 3 digits
With repeating digits, there are 33 = 27 possible combinations.Without repeating any digits, there are 6 combinations:357375537573735753
When expressed as a decimal, a rational number will either be terminating (end with a finite number of digits) or repeating (have a repeating pattern of digits).
For a single repeating digit, it is a dot over the digit.For string of repeating digits, it can be a dot over the first and last repeating digits, or a bar over the repeating string.
A decimal with a continuously repeating digits or group of digits
648
Infinity.
Repeating
If all 3 digits are repeating then as a fraction it is 215/999
It is a repeating decimal that starts: 0.363636... (repeating the digits '36' forever).