The position of how many letters will change if each of the letters in the word SKYLINE is arranged in alphabetical order?

Let's compare the original positions of the letters in the word SKYLINE with their positions when arranged in alphabetical order:
Original Word:

S
​

K
​

Y
​

L
​

I
​

N
​

E
​

​

Alphabetical Order:

E
​

I
​

K
​

L
​

N
​

S
​

Y
​

​

Now, let's track the changes for each position:

S→E (Changed)

K→I (Changed)

Y→K (Changed)

L→L (Unchanged)

I→N (Changed)

N→S (Changed)

E→Y (Changed)

Out of 7 letters, only L remains in its original position. Therefore, the number of letters whose positions will change is 7−1=6.