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Verified answer
1.6=2×3 15=3×5 FPB = 32.8=2^3 20=2^2×5 FPB = 2^2 = 4
3.27=3^3 36=2^2×3^2 FPB = 3^2 = 9
4.42=2×3×7 56=2^3×7 FPB = 2×7=14
5.40=2^3×5 64=2^6 FPB = 2^3 = 8
6.99=3^2×11 165=3×5×11 FPB = 3×11 = 33
7.51=3×17 119=7×17 FPB = 17
8.54=2×3^3 144=2^4×3^2 FPB =2×3^2=2×9=18
9.72=2^3×3^2 108=2^2×3^3 FPB=2^2×3^2=4×9=36
10.76=2^2×19 171=3^2×19 FPB = 19
11.126=2×3^2×7 147=3×7^2 FPB = 3×7=21
12.176=2^4×11 220=2^2×5×11 FPB=2^2×11=4×11=44
13.138=2×3×23 184=2^3×23 FPB=2×23=46
14.144=2^4×3^2 216=2^3×3^3 FPB=2^3×3^2=8×9=72
15.150=2×3×5^2 225=3^2×5^2 FPB=3×5^2=3×25=75