The number of elements in a group is called the group's "order".
ð ə WORD_BOUNDARY n ʌ m b ə ɹ ɹ WORD_BOUNDARY ʌ v WORD_BOUNDARY ɛ l ɪ m ə n t s WORD_BOUNDARY ɪ n WORD_BOUNDARY ʌ WORD_BOUNDARY ɡ ɹ uː p WORD_BOUNDARY ɪ z WORD_BOUNDARY k ɔ l d WORD_BOUNDARY ð ə WORD_BOUNDARY ɡ ɹ uː p s WORD_BOUNDARY ɔ ɹ d ə ɹ WORD_BOUNDARY