Question 1120180
Exactly 8 is 10C8*0.5^8*0.5^2
This is 45/1024
8, 9, and 10 would be at least
9 heads is 10C9*0.5^10 or 10/1024
10 heads is 1/1024
At least 8 is the sum or 56/1024 
These can be converted to decimals.