Question
Studdy Solution
STEP 1
Assumptions
1. We have a list of numbers: 18, 72, 81, 13, 7, 64, -7, 17.
2. We need to determine which of these numbers belong to a "зохиомол тоо" (artificial number) set.
3. The term "зохиомол тоо" is not standard in mathematics, so we need to interpret it based on context or additional information.
4. We will assume "зохиомол тоо" refers to composite numbers, as they are often contrasted with prime numbers.
STEP 2
Define composite numbers.
Composite numbers are positive integers greater than 1 that have more than two distinct positive divisors. In other words, they are not prime numbers.
STEP 3
Identify the composite numbers from the list.
- 18: Divisors are 1, 2, 3, 6, 9, 18 (composite)
- 72: Divisors include 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72 (composite)
- 81: Divisors are 1, 3, 9, 27, 81 (composite)
- 13: Divisors are 1, 13 (prime)
- 7: Divisors are 1, 7 (prime)
- 64: Divisors include 1, 2, 4, 8, 16, 32, 64 (composite)
- -7: Negative numbers cannot be composite or prime in the traditional sense.
- 17: Divisors are 1, 17 (prime)
STEP 4
List the composite numbers from the given list.
The composite numbers are 18, 72, 81, and 64.
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