Question

Blood Groups Number of
students
A 9

B 6

O 12

AB 3

Total 30

The ratio between the frequencies of blood group AB and B
(a) 1:2 (b)1:3
(c) 2:3 (d) 3:4

Answer 1

(a) 1:2 is the answer...

Cause AB is 3 and B is 6

so 3:6 = 1:2

Step-by-step explanation:

Cause