How many integers from 1 through 82 must you pick in order to be sure of getting at least two of them that have the same remainder when divided by 5? Your Answer: Answer

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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**Question:**

How many integers from 1 through 82 must you pick in order to be sure of getting at least two of them that have the same remainder when divided by 5?

**Your Answer:**

[Answer Box]
Transcribed Image Text:**Question:** How many integers from 1 through 82 must you pick in order to be sure of getting at least two of them that have the same remainder when divided by 5? **Your Answer:** [Answer Box]
**Problem Statement:**

You have 2 red plates, 3 green plates, and 4 blue plates. How many distinguishable ways can you stack the plates?

**Your Answer:**

[Answer Box]

---

**Explanation:**

To find the number of distinguishable ways to stack the plates, we can use the formula for permutations of multiset:

\[
\frac{n!}{n_1! \times n_2! \times \cdots \times n_k!}
\]

Where:
- \(n\) is the total number of items to arrange.
- \(n_1, n_2, \ldots, n_k\) are the frequencies of each distinct item.

In this case:
- The total number of plates \(n = 2 + 3 + 4 = 9\).
- Frequencies: 2 red plates (\(n_1 = 2\)), 3 green plates (\(n_2 = 3\)), 4 blue plates (\(n_3 = 4\)).

Substituting into the formula gives:

\[
\frac{9!}{2! \times 3! \times 4!}
\]

Calculate each factorial value and simplify to find the total number of distinguishable arrangements.
Transcribed Image Text:**Problem Statement:** You have 2 red plates, 3 green plates, and 4 blue plates. How many distinguishable ways can you stack the plates? **Your Answer:** [Answer Box] --- **Explanation:** To find the number of distinguishable ways to stack the plates, we can use the formula for permutations of multiset: \[ \frac{n!}{n_1! \times n_2! \times \cdots \times n_k!} \] Where: - \(n\) is the total number of items to arrange. - \(n_1, n_2, \ldots, n_k\) are the frequencies of each distinct item. In this case: - The total number of plates \(n = 2 + 3 + 4 = 9\). - Frequencies: 2 red plates (\(n_1 = 2\)), 3 green plates (\(n_2 = 3\)), 4 blue plates (\(n_3 = 4\)). Substituting into the formula gives: \[ \frac{9!}{2! \times 3! \times 4!} \] Calculate each factorial value and simplify to find the total number of distinguishable arrangements.
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