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# Which factors are not included in the prime factorization of a composite number?

**Solution:**

We will use the concepts of prime number, composite number, prime factorization, and factors to solve this.

Let's take an example of a composite number to understand this.

42 can be written as,

42 = 2 × 3 × 7

The prime factors of 42 are 2, 3, and 7. The factors that are not included are 1 and 42 as they are not prime numbers.

Hence, we can say that the number itself and 1 are not included in the prime factorization of a composite number.

NCERT Solutions for Class 6 Maths Chapter 3 Exercise 3.5 Question 3

## Which factors are not included in the prime factorization of a composite number?

**Summary:**

The number itself and 1 are not included in the prime factorization of a composite number.

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