A gardener has nine rose bushes to plant: three have red flowers and six have yellow flowers. If they plant them in a row in random order, find the probability that:
a yellow rose bush is in the middle of the row
Important Questions on Permutations and Combinations
A gardener has nine rose bushes to plant: three have red flowers and six have yellow flowers. If they plant them in a row in random order, find the probability that:
the three red rose bushes are not separated
A gardener has nine rose bushes to plant: three have red flowers and six have yellow flowers. If they plant them in a row in random order, find the probability that:
no two red rose bushes are next to each other.
A farmer has animals. They have sheep, of which three are male, and they have cattle, of which are female. A veterinary surgeon wishes to test six randomly selected animals. Find the probability that the selection consists of:
equal numbers of cattle and sheep
A farmer has animals. They have sheep, of which three are male, and they have cattle, of which are female. A veterinary surgeon wishes to test six randomly selected animals. Find the probability that the selection consists of:
more females than males.
Three skirts, four blouses and two jackets are hung in random order on a clothes rail. Find the probability that:
the three skirts occupy the middle section of the arrangement
