Answer:
1 thousand i think hope this helps!
Step-by-step explanation:
Supplementary angles sum up to 180°, suppose the supplement of 161° is x. Then
161+x=180
solving for x we subtract 161 from both sides
161-161+x=180-161
x=19
thus the supplement is 19°
I think you forgot to attach the image :(
If order doesn't matter (e.g. all the positions in the committee are essentially identical) then the number of possible choices is

.