edited by
347 views

1 Answer

Best answer
1 votes
1 votes
Ans is b.....4

For the string to be minimal from first one you have to choose aa and from second and third you can choose either a or b so no of minimal string=2×2=4
selected by

Related questions

1 votes
1 votes
1 answer
3
0 votes
0 votes
1 answer
4