Which of the following set of numbers are arranged in descending order?

Options

A. `1356, 1635, 1520, 1536`
B. `1635,1520, 1356, 1536`
C. `1356, 1520, 1536, 1635`
D. `1635, 1536, 1520, 1356`

Answer

To determine which set of numbers is arranged in descending order, we need to follow these steps:

### Step 1: Understand Descending Order
Descending order means arranging numbers from the largest to the smallest.

**Hint:** Remember that in descending order, the first number should always be the largest.

### Step 2: Analyze Each Set of Numbers
Let's analyze the given sets of numbers one by one.

1. **Set 1:** 13, 16
- 16 is greater than 13, so this set is not in descending order.

**Hint:** Compare the first two numbers to see which is larger.

2. **Set 2:** 16, 15, 13
- 16 > 15 > 13, so this set is in descending order.

**Hint:** Check if each number is greater than the one that follows it.

3. **Set 3:** 15, 13, 15
- 15 is greater than 13, but the second 15 is not in the correct order since it should come after a smaller number.

**Hint:** Look for any repetitions and their positions.

4. **Set 4:** 16, 15, 15, 20
- Here, 16 > 15 > 15, but 20 is greater than 16, so this set is not in descending order.

**Hint:** Ensure that the largest number is at the beginning.

### Step 3: Identify the Correct Set
After analyzing all the sets, we find that **Set 2 (16, 15, 13)** is the only one arranged in descending order.

**Final Answer:** The correct set of numbers arranged in descending order is **16, 15, 13**.