I want know the concepts of question 3

I want know the concepts of question 3 30 Oso the H C F Of the g on 112. 144 and 1 ao (iii) 84. 9B 105 and 175 (v) '29. 215 and 387 17', 285 and 399 Find the HCF Of each Of the following by continued division method. (i) 136and640 (iii 391. 425 and 527 (iii) 107B and 1463 527, 646 and 1105 (v) 1682. 1798 and 2146 Reduce the following fractions to the lowest terms by dividing the numerator and denominator Of each of the following by their HCF. 16B 266 603 1005 1035

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