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zad 9.
2, 3, 5, 7, 11, 17, 23, 33 - te na pewno
zad 10.
a)
50=2×5×5
70=2×5÷7
b)
60=5×2×3×2
42=2×3×7
zad 11.
48=2×2×2×2×3
160=2×2×2×2×5×2
660=2×2×5×33
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37
Zad10.
50
50=25+25
50=25+10+15
50=10+15+10+15
50=5+5+5+5+10+5+10+5
70
70=40+3070=20+20+10+2070=10+10+2+8+14+670=3+7+4+6+2+6+2+7+3+4+4+2
60
60=34+26
60=16+18+5+5+6+2+6+1+1
60=3+3+2+5+1+2+7+1+4+4+1+1+3+2+1+4+4+2+1+1
42
42=30+12
42=15+15+6+6
42=2+2+4+3+1+3+3+1+3+4+2+2+3+2+1+1+2+3
Zad11.
160 | 2
80 | 2
40 | 2
20 | 2
10 | 2
5 | 5
1
160 = 2*2*2*2*2*5
660 | 2
330 | 2
165 | 3
55 | 5
11 | 11
1
660 = 2*2*3*5*11