Jelly, (削除) 5 (削除ここまで) 4 bytes
f2\Ạ
Input is an array of strings.
How it works
f2\Ạ Main link. Argument: A (array of strings)
2\ Pairwise reduce by:
f Filter, yielding all chars in the left string that appear in the right one.
Ạ All; yield 1 if all strings are non-empty, 0 if not.
Jelly, (削除) 5 (削除ここまで) 4 bytes
f2\Ạ
Input is an array of strings.
How it works
f2\Ạ Main link. Argument: A (array of strings)
2\ Pairwise reduce by:
f Filter, yielding all chars in the left string that appear in the right one.
Ạ All; yield 1 if all strings are non-empty, 0 if not.