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Q.

The exponent of 3 in the prime factorization of 576 is

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a

4

b

5

c

6

d

2

answer is B.

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Detailed Solution

The prime factorisation of a number involves breaking it down into its smallest prime factors. To determine the exponent of 3 in the prime factorisation of 576, we perform the following steps:

  1. Start with the number 576. Divide it by the smallest prime number, which is 2, repeatedly until it is no longer divisible by 2.
  2. The continuous division results in:
    • 576 ÷ 2 = 288
    • 288 ÷ 2 = 144
    • 144 ÷ 2 = 72
    • 72 ÷ 2 = 36
    • 36 ÷ 2 = 18
    • 18 ÷ 2 = 9
  3. At this point, 9 is not divisible by 2. Proceed to the next prime number, which is 3.
  4. Divide 9 by 3 repeatedly:
    • 9 ÷ 3 = 3
    • 3 ÷ 3 = 1

Thus, the prime factorisation of 576 is:

576 = 26 × 32

In the prime factorisation of 576, the exponent of 3 is 2, as 3 appears as a factor raised to the power of 2.

Also Check: Factor of 36

Final Answer

The prime factorisation of 576 reveals that it consists of the prime number 2 raised to the power of 6 and the prime number 3 raised to the power of 2. Therefore, the exponent of 3 in the prime factorisation of 576 is 2.

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