Complete the factor tree by replacing question mark with appropriate number.
A
3
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B
7
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C
9
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D
11
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Solution
The correct option is C 9 For the given factor tree 18 can be broken down into two numbers.
2 is already there so we need to find the pair which has 2 and will from 18 on multiplication.
9 x 2 = 18
Therefore, 9 is the answer to the question.