Consider the following list of prime factors:

$168=2\times2\times2\times3\times7$168=2×2×2×3×7 and

$882=2\times3\times3\times7\times7$882=2×3×3×7×7.

Find the highest common factor of $168$168 and $882$882 by using the list of prime factors.

Easy

Approx 2 minutes

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Use prime numbers, common factors and multiples, and powers (including square roots)