Answer:
[tex]\frac{1}{4}[/tex]
Step-by-step explanation:
Number of blue marbles = 8
Total number of marbles = 16+8+7+1=32
[tex]probability\: of \:selecting\: a\: blue\; marble\\=\frac{Number\: of\:blue\: marbles}{Total\: number\: of\: marbles} \\\\=\frac{8}{32} \\\\=\frac{1}{4}[/tex]
