Find the greatest common divisor (GCD) of 84 and 126.
Note
Prime factors: 84 = 2^2×3×7, 126 = 2×3^2×7; common factors take min powers: 2^1×3^1×7^1 = 42, so GCD is 42.
Find the greatest common divisor (GCD) of 84 and 126.
Prime factors: 84 = 2^2×3×7, 126 = 2×3^2×7; common factors take min powers: 2^1×3^1×7^1 = 42, so GCD is 42.