Question

In how many different ways can the letter of the word friday be arranged? Also find hjow many of these begin with D​

Answer 1

Answer:

720,120

Step-by-step explanation:

The different number of ways in which a collection of items can be arranged is called permutation.

It is mathematically defined as

n! = n*(n-1)*(n-2)*............3*2*1

So, According to the question, Friday had 6 letters so it can be arranged in 6! ways according to the formula given above.

which comes out to be= 6*5*4*3*2*1= 720

Well, if we fix the first place for letter f there will be 5 letters left, They again can be arranged into 5! ways which is equal to 120.