Translation of "Digits" in Japanese

How many digits are on your answer, six or seven digits?

桁数は ６桁？それとも７桁ですか？

Any six of your seven digits,

７桁のうち ６個の数字

Or in your case five of your six digits

あなたの場合は ６桁のうち５個の数字を

He's good. His handicap is in the single digits.

彼は、上手いよ！シングルプレーヤーだ。