Question

Define with example. co prime number. perfect number. composite number​

Answer 1

Step-by-step explanation:

co prime number-For example, 2 and 3 are two prime numbers. Factors of 2 are 1, 2, and factors of 3 are 1, 3. The only common factor is 1 and hence they are co-prime. Any two successive numbers/ integers are always co-prime: Take any consecutive numbers such as 2, 3, or 3, 4 or 5, 6, and so on; they have 1 as their HCF

perfect number-.In number theory, a perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself. For instance, 6 has divisors 1, 2 and 3, and 1 + 2 + 3 = 6, so 6 is a perfect number.

composite numbers-A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Equivalently, it is a positive integer that has at least one divisor other than 1 and itself. ... For example, the integer 14 is a composite number because it is the product of the two smaller integers 2 × 7.

Answer 2

Step-by-step explanation:

A Co-prime number is a set of numbers or integers which have only 1 as their common factor i.e. their highest common factor (HCF) will be 1. 

Example 7, 15

A perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself.

For example, 6 has divisors 1, 2 and 3, and 1 + 2 + 3 = 6, so 6 is a perfect number

A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Equivalently, it is a positive integer that has at least one divisor other than 1 and itself.

For example, 14 is a composite number because it is the product of the two smaller integers 2 × 7.