Question

Question 9 Unsaved The school band is scheduled to march in the annual parade, but the band's starting point is changed the day before the parade. The band director calls three band members. Each band member calls three other band members. Then these band members each call three members. How many band members, including the band director, are notified of the new starting point?

Answer 1

40

Explanation:

Given : The band director calls three band members. Each band member calls three other band members. Then these band members each call three members.

To Find : How many band members, including the band director, are notified of the new starting point?

Solution :

Band member call member = 3

Since we are given that Each band member calls three other band members.

These 3 members call members :

1 calls 3 members

next 1 calls 3 member

Next 1 call 3 members

So these three calls member = 3+3+3=9

Again these 9 members calls members .

Each member calls 3 members

So, these 9 members calls 27 members .

So total members = 3+9+27=39

Since we are asked to include band director also

So, 39+1=40

Thus , 40 band members, including the band director, are notified of the new starting point

Answer 2

If your choices are the following:
A. 12 members
B. 13 members
C. 20 members
D. 40 members

Then the answer is letter D.