# Group Elements of Z24: Find the Order

• MHB
• Yara Leonard
In summary, group elements in Z24 are a set of integers from 0 to 23 that can be combined using a specific operation to form a closed set. There are 24 group elements in total, and the order of a group element is the smallest positive integer n where n repeated combinations of the element using the specified operation result in the identity element. To find the order, the element can be combined with itself using the operation until reaching the identity element. The order cannot be greater than 24 as it must be a factor of the total number of elements in the set.
Yara Leonard
Determine the order of every element of Z24

kindly infrom what you have tried and where you are facing problems

Do you understand that "z24" is the additive group of integers modulo 24? That has 23 non-zero members so you will need to give 23 answers. Do you further understand that the "order" of a member, a, of a group is the integer "n" such that na= 0 where "na" means a added to itself n times. For example 6+ 6+ 6+ 6= 24= 0 (mod 24) so 6 has order 4. No multiple of 5 will be 24 so the order of 5 (and any number that is not a divisor of 24) is "infinity".

## 1. What are group elements of Z24?

Group elements of Z24 refer to the set of integers from 0 to 23 that form a group under the operation of addition modulo 24. This means that when two elements are added together, the result will always be within the set of integers from 0 to 23.

## 2. How many group elements are there in Z24?

There are 24 group elements in Z24, as the set includes all integers from 0 to 23.

## 3. What is the order of a group element in Z24?

The order of a group element in Z24 is the number of times the element must be added to itself to get the identity element, which is 0. For example, the order of 3 in Z24 is 8, as 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 = 24, which is equivalent to 0 in Z24.

## 4. How do you find the order of a group element in Z24?

To find the order of a group element in Z24, you can use the formula n/gcd(n, 24), where n is the smallest positive integer such that n * element = 0, and gcd(n, 24) is the greatest common divisor of n and 24. For example, to find the order of 3 in Z24, we can use the formula 24/gcd(24, 3) = 24/3 = 8.

## 5. Can a group element in Z24 have an order greater than 24?

No, the order of a group element in Z24 cannot be greater than 24. This is because the set only includes integers from 0 to 23, and any element added to itself more than 24 times will result in a number greater than 23, which is not within the set of group elements in Z24.

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