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Question
Show that the following pairs are co-primes:
343, 432
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Solution
The given numbers are 343 and 432.
We have:
Now, 343 = 7 × 7× 7 × 1 = 73 × 1
432 = 2 × 2× 2 ×2 × 3× 3 ×3 = 24 × 33 × 1
∴ HCF =1
Hence, 343 and 432 are co-primes.
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