Given that there are <span>6 boys and 6 girls in a birthday party, the number of different arrangements of</span><span> first, second, and third is given by:

</span>
Answer:
4
Step-by-step explanation:
Because if you have 2 apples and add 2 apples to that, you'll have a total of 4.
Answer:
21
69
Step-by-step explanation:
The inverse dependency ratio is an indicator that gives insight into the amount of people of nonworking age compared to the number of those of working age. It is defined as the ratio between <span>the number of </span>dependents, (aged zero to 14 and over the age of 65,) and the number of the total population, aged 15 to 64.
A high ratio means those of working age, and the overall economy, face a greater burden in supporting the aging population. <span>
</span>