Your track coach tells you that your team's meeting is canceled. He asks you to call 3 other team members. Each of the members must call 3 other members. How many members, including yourself will be contacted?
I got 13. Is this right?
Yes.
To find out how many members, including yourself, will be contacted, we can work through it step by step.
Since you need to call 3 other team members, the number of members reached by your calls will be 3.
Now, each of the 3 members you called needs to call 3 other members as well, so that's 3 members x 3 calls = 9 members.
Adding yourself to the total, we have 1 member (yourself) + 3 members reached by your calls + 9 members reached by the calls from those you called.
Therefore, the total number of members contacted would be 1 + 3 + 9 = 13.
So, your answer of 13 is correct!