2018-19 ; ; ; 2018-19 2018-19 ; ; 2018-19 1 2 3 6=12=2 6 1 2 4 7 14 28=56=2 28 2018-19 , , , , 2018-19 2018-19 2018-19 2,3,5,7,11,13 3,5,7, 11,13 N O 2018-19 s [ ] 2018-19 2018-19 2 1=3, 3 6=9, 5 4=9, 2 1 9=12 2018-19 2018-19 1 8 = 9, 2 7 = 9, 3 6 = 9, 4 5 = 9, 4 6 0 8 = 18, 5 2 8 3 = 18 2018-19 2018-19 P 2018-19 4,8,12,16,20,24,... 6,12,18,24,30,36 (Common multiples) 3,6,9,12,15,18,21,24,27,30,33,... 5,10,15,20,25,30,35,.. 6,12,18,24,30,... 30,60,90,... 1,3,5,15,25, 75 1,2,3,4,5,6,10,12,15,30 60 1,2,3,5,6,7,10,14,15,21,30,35,42,70,105 210 1,3,5 15 4,8,12,16,20,24,28,32,36,40,44,48,... 9,18,27,36,45,54,63,72,81,... 3,6,9,12,15,18,21,24,27,30,33,36,39,42,45... 36,72,108,... 2018-19 2018-19 2018-19 980=2x2x5x7x7 2018-19 2018-19 2018-19 (Highest Common Divisor) 2018-19 (a) (b) (c) (d) (e) (f ) 2018-19 (a) (b) (c) (d) (e) 2018-19 2018-19 2018-19 2018-19

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