In a basketball contest, players must make 10 free throws. Assuming a player has 90% chance of making each of his shots, how likely is it that he will make all of his first 10 shots?
a) 10%
b) 25%
c) 35%
d) 45%
c) 55%
How many randomly assembled people do u need to have a better than 50% prob. that at least 1 of them was born in a leap year?
a) 2
b) 3
c) 4
d) 5
c) 7
I generally know how to do each problem, but I'm not sure if I could do each without a calculator very quickly.
a) 10%
b) 25%
c) 35%
d) 45%
c) 55%
How many randomly assembled people do u need to have a better than 50% prob. that at least 1 of them was born in a leap year?
a) 2
b) 3
c) 4
d) 5
c) 7
I generally know how to do each problem, but I'm not sure if I could do each without a calculator very quickly.
