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Question: Find the prime factorization of 36 .


A ) 22 × 31
B ) 21 × 32
C ) 23 × 32
D ) 22 × 32

Steps to derive

1 The factor tree of 36 is:
 [36 = 6 × 6, 6 = 3 × 2]


2 The circled numbers in the factor tree are the prime factors of 36.

3 36 = 3 × 2 × 3 × 2

 [Write in the form of exponents.]
4 36 = 22 × 32

5 The prime factorization of 36 is 22 × 32.



Hence the right answer is Option D

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