Question

How many ways can eight girls sit together in a row?

Answer 1

Answer:

2 rows of 4

Step-by-step explanation:

2x4=8

Answer 2

In 10080 ways

Step-by-step explanation:

We first treat the two people how have to sit together as 1 item taking up 2 seats so they have 7 possibilities of seats i.e. 12 23 34 45 56 67 78 and the two of them can sit in 2 possible ways, AB or BA

Now, the other 6 people will have 6 seats to choose from. So the total number of ways they can sit is 6 for the first person 5 for the second and so on so its 6!

Thus, the total number is $7 \times 2 \times 6 !$ = 10 080