how can we use factor tree to find the of a number

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Solution

Example:

.....315

...../...\

....5....63

.../....../..\

..5....7...9

../..../..../..\

5....7...3....3

the number is divided into many number which ends with a prime numbers.

here the ending is with a prime numbers such as 5,7,3,3

so the number is obtained by multiplying 5 x 7 x 3 x 3 =315

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