Answer :
The number of different selections of flowers he can make is 1053.
To find the number of different selections of flowers he can make the following calculation must be performed:
- 17 x 13 + 9 x 7 + 7 x 7 = X
- 17 x 15 + 9 x 6 + 7 x 6 = Y
- 17 x 17 + 9 x 5 + 7 x 5 = Z
- X + Y + Z = Total
- 333 + 351 + 369 = Total
- 1053 = Total
Therefore, the number of different selections of flowers he can make is 1053.
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