Question

How many different arrangement are possible from the letters of the word calculation

Answer 1

I think this pic will help you

Answer 2

No. of letters = C, A, L, U, T, I, O, N
.'. No. of Arrangements =$^{11} {P}_{11}$/ (2! * 2! * 2!)= 11! / (2! * 2! * 2!) = 4989600