Question

Write the smallest $4-$digit number and express it in terms of its prime factors by using a factor tree.

Answer 1

As we know that smallest $4-$digit number is $1000$.

Prime factors of $1000=2\times 2\times 2\times 2\times 5\times 5\times 5\times 5$

Hence, the prime factors of the smallest $4-$digit number is $1000=2\times 2\times 2\times 2\times 5\times 5\times 5\times 5$.