Question

Example-9: How many different arrangements can be made of all the letters of the word
**Engineering”? In how many of them the three e s stand together and in how many will they
stand first?​

Answer 1

Answer:

Step-by-step explanation:

there are 3 E,3N,2G,2I and 1R.

Total no. of arrangements when all three Ns come together=9!3!2!2!....(1)

Total no. of arrangements when all three Ns and Es come together=7!2!2!....(2)

Required ways=>(1)-(2)=13860

R