I think the answer is A because it I'm right it did double the size.
He can only pick 7 different groups because 2 times 7 is 14, and there are 15 people in all.
Hope this helps. c:

It is prime because it has no common factors in 5a^2 and b.
The answer is
A<span>
.</span>
Answer:
30
Step-by-step explanation:
We have to make the intersection between these sets, and we see that they intersect in the range: [70,100], and d(70,100) = 30, that is the answer.