Find the HCF of the following by prime factorisation method.
(a) 12 and 56 (b) 18 and 42 (c
) 72 and 90 (d) 56 a
(e) 153 and 162 (1) 98 and 140 (g) 136, 170, 255 (h) 144,
(i) 216 630
(i) 384, 432, 1200
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