When arranging 5 white flags and 5 blue flags in a line, how many ways are there to place white flags at both ends? (Note: flags of the same color are indistinguishable from each other.) [3 points] (1) 56 (2) 63 (3) 70 (4) 77 (5) 84
When arranging 5 white flags and 5 blue flags in a line, how many ways are there to place white flags at both ends? (Note: flags of the same color are indistinguishable from each other.) [3 points]\\
(1) 56\\
(2) 63\\
(3) 70\\
(4) 77\\
(5) 84