Question

Choose the correct prime factorization of $86.$ Evaluate using factor tree.

• A. $2\times 2\times 3\times 7$
• B. $2\times 3\times 3\times 7$
• C. $2\times 3\times 7\times 7$
• D. $2^2\times 3\times 7$

Answer 1

Answer: (A), (D)

$2^2\times 3\times 7$

Factor tree of $86$ is as follows:

$\therefore 84=2\times 2\times 3\times 7$
Alternatively, it can be expresses as $84=2^2\times 3\times 7$