If the probability that the Islanders will beat the Rangers in a game is 3/5, what is the probability that the Islanders will win at least four out of seven games in a series against the Rangers?

Question

anonymous · Answer

now, i have to go...... sorry.......
use binomial probability theorem......

anonymous · Answer

7C4* (3/5)^4 *(2/5)^3 + 7C5* (3/5)^5 *(2/5)^2 + 
7C6* (3/5)^6 *(2/5)^1  +7C7* (3/5)^7 *(2/5)^0

anonymous · Answer

i got .71028 is that right?

anonymous · Answer

i can't say..... calculate the above value..........