The word MARMALADE contains four vowels and five consonants. Find the number of possible arrangements of its nine letters if:
there are no restrictions on the order
Important Questions on Permutations and Combinations
The word MARMALADE contains four vowels and five consonants. Find the number of possible arrangements of its nine letters if:
the arrangement must begin with the four vowels.
Five men, four children and two women are asked to stand in a queue at the post office. Find how many ways they can do this if:
the women must be separated
Five men, four children and two women are asked to stand in a queue at the post office. Find how many ways they can do this if:
all of the children must be separated from each other.
Eight-digit mobile phone numbers issued by the Lemon Network all begin with
How many different phone numbers can the network issue?
Eight-digit mobile phone numbers issued by the Lemon Network all begin with
Find the probability that a randomly selected number issued by this network:
ends with the digits
Eight-digit mobile phone numbers issued by the Lemon Network all begin with
Find the probability that a randomly selected number issued by this network:
reads the same left to right as right to left.
