Answer: 21034470600
Step-by-step explanation:
Given : The number of number of tulip bulbs = 8
The number of daffodil bulbs = 10
The number of crocus bulbs = 7
Total bulbs = 10+8+7=25
We know that the number of permutations to arrange n objects , where k are of one kinds , m are of another kind and so on is
[tex]\dfrac{n!}{m!k!....}[/tex]
Now, the number of ways by which Frances can plant these bulbs in a border along the edge of her garden :-
[tex]\dfrac{25!}{10!8!7!}=21034470600[/tex]