#### 88**Question:
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- Sum = a(r^n − 1)/(r − 1) = 12×(1.08^6 − 1)/(0.08)
- 1.08^6 ≈ 1.58687 → 1.58687 − 1 = 0.58687
- Sum = 12 × 0.58687 / 0.08 = 12 × 7.3359 ≈ <<12*7.3359=88.0308>>88.03 ≈ 88 tons
- A primatologist is observing a group of 6 primates where each primate communicates with every other primate exactly once per day. How many unique communication events occur in one day?
- To determine the number of unique communication events, we need to find the number of ways to choose 2 primates out of 6 to form a communication event. This is a combination problem where we choose 2 out of 6, denoted as \(\binom{6}{2}\).
- The formula for combinations is given by:
