Question

How many distinguishable ways can the letters of “computer” be arranged? How about “discrete”?

Answer 1

Answer:

since word COMPUTER contain 8 letters and all are different

so required number of ways = 8! = 40320

Now word DISCRETE contain 8 letters among which 2 letters ' E ' are same

so required number of ways = 8! / 2!

= 40320 / 2 = 20160