High School

1. Describe each pattern.

Adding 2: 20, 22, 24, 26
Subtracting 4: 39, 35, 31, 27
Adding 5: 25, 30

Example:
We add six to 44 and get 50, we add another six to 50 and get 56. We subtract nine from 62 and get 53. We subtract another nine and get 44.

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i.

Answer :

In this question, we are examining patterns in sequences of numbers. Let's break down each pattern described:

  1. Adding 2: 20, 22, 24, 26

    • In this sequence, each number is obtained by adding 2 to the previous number.
    • For instance, starting at 20, adding 2 gives us 22. Adding 2 to 22 results in 24, and adding 2 to 24 results in 26.
  2. Subtracting 4: 39, 35, 31, 27

    • In this sequence, each number is derived by subtracting 4 from the previous number.
    • Starting with 39, if we subtract 4, we get 35. Subtracting 4 from 35 results in 31, and subtracting 4 from 31 gives us 27.
  3. Adding 5: 25, 30

    • Here, the sequence increases by adding 5.
    • Starting at 25, adding 5 results in 30.

In the given example, another sequence is demonstrated for better understanding:

  • Adding 6:

    • Starting at 44, adding 6 gives 50. Adding another 6 to 50 results in 56.
  • Subtracting 9:

    • Starting at 62, subtracting 9 gives 53. Subtracting another 9 from 53 results in 44.

Understanding these patterns helps in determining how sequences progress and predicting the next numbers in each pattern.