Find the HCF and LCM of the following integers by prime factorisation method of 204, 1020, 1190
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204=2x2x3x17
1020= 2x17x3x5x2
1190= 5x2x17x7
h.c.f = 2×17=34
l.c.m. = 2x2x3x17x5x7
= 7140
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