Find 4 Consecutive Odd Integers Whose Sum is 128 by 3 Ways

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The sum of four consecutive odd integers is 128, what are these odd integers? I can easily tell you that the answer are 29, 31, 33 and 35. You must be interested in how to find these 4 consecutive odd integers whose sum is 128. There are three methods here, let us introduce them one by one below.

How to find four consecutive odd integers whose sum is 128?

1. Hypothetical method

Assuming that 2 * N + 1 is used to represent the first odd integer, so the second odd integer is 2 * N + 3, the third odd integer is 2 * N + 5, the 4th odd integer is 2 * N + 7.

Therefore, the sum of 4 consecutive odd integers is 128, which can be expressed by the equation

(2 * N + 1) + (2 * N + 3) + (2 * N + 5) + (2 * N + 7) = 128

Solve this equation

(2 * N + 1) + (2 * N + 3) + (2 * N + 5) + (2 * N + 7) = 128

2 * N + 1 + 2 * N + 3 + 2 * N + 5 + 2 * N + 7 = 128

8 * N + 1 + 3 + 5 + 7 = 128

8 * N + 16 = 128

8 * N = 128 – 16

8 * N = 112

N = 112 / 8

N = 14

So, 2 * N + 1 = 2 * 14 + 1 = 29

Now, we can get that 29 is the first integer of 4 consecutive odd integers whose sum is 128. So, the second odd integer is 31, the third odd integer is 33, the 4th odd integer is 35.

The answer came out, the sum of 4 consecutive odd integers is 128, these three odd integers are 29, 31, 33 and 35.

Verify: 29 + 31 + 33 + 35 = 128. Correct!

This is the most common method, let’s look at the second method, which is my favorite method.

2. Formula method

According to the consecutive integers calculator based on sum, we can know that the sum of M consecutive odd integers is S, the first odd integer formula is

First(o) = S / M – M + 1

M represents the number of consecutive odd integers.

S stands for sum.

Back to the problem we want to solve: find four consecutive odd integers whose sum is 128. In here, M = 4, S = 128. Replace them in the formula to calculate the first odd integer

First(o) = 128 / 4 – 4 + 1 = 32 – 4 + 1 = 29

The first odd integer is 29, so, it can be easily calculated that the second odd integer is 31, the third odd integer is 33, the 4th odd integer is 35.

Thus, the answer are also 29, 31, 33 and 35. Same as the first method. Then look at the third method, which is the simplest one.

3. Average method

The principle is very simple, because we want to calculate the consecutive odd integers, so after calculating the average, we can find the odd integers near the average.

The sum of 4 consecutive odd integers is 128, so, the average of these 4 consecutive odd integers is 128 / 4 = 32. The odd integers around 32 are 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38. Now the problem is simple, find 4 consecutive odd integers from 26 to 38 and their average is 32. The answer are 29, 31, 33 and 35.

So the sum of 4 consecutive odd integers is 128, these odd integers are 29, 31, 33, 35. The results are consistent with the above two methods. Is it very simple?

Problems can be sloved by this answer

Now, we have found out these 4 consecutive odd integers whose sum is 128, some problems can be easily solved.

  • 1. What are four consecutive odd integers whose sum is 128?
    The answer are 29, 31, 33 and 35.
  • 2. What is the smallest of four consecutive odd integers whose sum is 128?
    The answer is 29.
  • 3. What is the greatest of four consecutive odd integers whose sum is 128?
    The answer is 35.
  • 4. What is the average of four consecutive odd integers whose sum is 128?
    The answer is? (29 + 31 + 33 + 35) / 4 = 128 / 4 = 32.
  • 5. What is the product of four consecutive odd integers whose sum is 128?
    The answer is 29 * 31 * 33 * 35 = 1038345.
  • 6. What is the sum of square of four consecutive odd integers whose sum is 128?
    The answer is 292 + 312 + 332 + 352 = 4116.

Summarize

On this page, In addition to introducing three methods how to find four consecutive odd integers whose sum is 128, it also provides a calculator that calculates four consecutive odd integers based on the sum. If you encounter a similar problem next time, you can directly use this calculator to calculate the answer, which is very convenient.

Of course, if the problem you encounter is more complicated, such as: the number of consecutive integers is not 4, or you need to calculate consecutive integers or consecutive even integers. You can use our other more advanced sum-based consecutive integers calculator, where you can specify the number of consecutive integers and select consecutive integers type: natural integers, odd integers or even integers. I believe it can help you.

Well, that’s it, the above are three solutions to find four consecutive odd integers whose sum is 128. Personally, I prefer the second method, because it can accurately calculate the first integer and the calculation process is very simple. So how about you? Please leave a message and tell me which method you like?

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