1. Rectangular length/cm 1 1 10 9 8 7
Rectangular width/cm 1 2 3 4 5
2. Length of rectangle/cm 24 12 8 6
Rectangular width/cm 1 2 3 4
Two.
Only three interplanting sets, only one interplanting set, only two interplanting sets, only three interplanting sets.
1 possibility, 3 possibilities, 6 possibilities and 10 possibility.
A: There are 20 different possibilities.
Three.
Blue, blue, blue, blue, black, blue, black, black, black.
A: There are four possibilities.
Four.
five
five
A: On March 3 1 day, I also went to the nursing home to take part in voluntary labor.