Question

In how many ways could you choose two different letters from the letters C, O, U, N, T?
A. 60 ways

B. 20 ways

C. 120 ways

D. 10 ways

Answer 1

Does order matter?

Answer 2

I'm guessing it doesn't so you can use 5C2

Answer 3

So what this really means is \[\frac{ 5! }{ 2!(5-2)! }\]

Answer 4

total number of ways u can choose the 1st letter=5

no 1 letter got reduced
we are left with 4 letters
so total number of ways to chose the second letter=4

now look at this example-

so like this

total ways=5 x 4=20

Answer 5

wait no

Answer 6

Oh guess I was wrong :c

Answer 7

no wait

Answer 8

it depends
does the sequence count?
like do we consider CO and OC as diff?