The highest common factor (HCF) of 228 and 285 is the largest positive integer that divides both numbers without leaving a remainder. To find the HCF, you can use the Euclidean algorithm. First, divide the larger number (285) by the smaller number (228) to get a quotient of 1 with a remainder of 57. Then, divide the previous divisor (228) by the remainder (57) to get a quotient of 4 with a remainder of 0. Therefore, the HCF of 228 and 285 is 57.
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The GCF is 57.
57, 114, 171, 228, 285, 342.
285 15 x 19 (3 x 5) x 19 The factor tree has reduced 285 to its prime factors: 3, 5, and 19.
57, 114, 171, 228, 285, 342, 399, 456, 513, 570, 627, . . .
209 228 247 266 285 304 323 342 361 380 399
The GCF is 15.