Answer:
-2.8
Step-by-step explanation:
I solved it thats how
165 ways
Selection deals with combination
There are a total of 11 from which 3 are to be selected
11C3 = 11!/3!(11-3)!
= 11!/(3!x8!)
=(11x10x9x8!)/(3x2x8!)
=11x10x9/6
=11x5x3 = 165 ways
I think is 12.5
25 times 0.5 is 12.5
B because 180 - 55 +55 u get 70 due to opposite sides x us also 70
Hope this will help you :)
