The numbers 1-10 are written on a sheet of paper and the ten sheets of paper are placed in a bowl. If one sheet of paper is selected at random from the bowl, determine the probability that the number selected is odd. (Points: 1)

Answer 1

Four red and seven black beans are placed into a bag. If one of the beans is selected at random, determine the odds against the bean being red. (Points: 1)

Answer 2

aren't there 5 odd numbers form 1 to 10 ?

so prob is 5/10 or 1/2

for the second,
prob of red is 4/11
prob of black is 7/11

odds in favour of red = (4/11) : (7/11) = 4 : 7
so odds against red = 7 : 4