Using prime factorization find the hcf nd lcm of 72,126and 168
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72=3×2×2×2×3
126=3×2×3×7
168=3×2×2×2×7
hcf=3×2 =6
lcm= 72× 126 ×168 / 6
= 254016
126=3×2×3×7
168=3×2×2×2×7
hcf=3×2 =6
lcm= 72× 126 ×168 / 6
= 254016
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