Answer:
B
Step-by-step explanation:
Just read and you will see why i say that
Answer:
it didnt pop up the first time to answer
Step-by-step explanation:
go to de sm os and type in the equation and it will give you everything you need
Answer:
13
Step-by-step explanation:
43 - 30 = 13
q = 13
Answer:
1440 different arrangements are possible.
Step-by-step explanation:
Number of arrangements of n elements:
The number of arrangements of n elements is given by:

In this question:
6 couples, in which each can be positioned in 2 ways(him/her or her/him). So

1440 different arrangements are possible.
Put all the numbers in order, then it comes down to 11 and 9 divide by two and add. The answer is 10.