The blood groups of 25 students are recorded as under:
A, B, O, A, AB, O, A, O, B, A, O, B, A, AB, AB, A, A, B, B,
O, B, AB, O, A, B.
Arrange the information in a table using tally marks.

The blood groups of 30 students of Class VIII are recorded as follows: A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O, A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O. Represent this data in the form of a frequency distribution table. Which is the most common, and which is the rarest, blood group among these students?

The blood The blood groups of 30 students of class IX are recorded as follows: A, B O, O, AB, O, A, O, B, A, O, B, A, O, O, A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O A student is selected at random from the class from blood donation. Find the probability that the blood group of the student chosen is: A (ii) B (iii) AB (iv) O

The blood groups of 30 students are recorded as follows A,B,O,A,AB,O,A,O,B,A,OB,B,A,AB,B,A,AB,B,A,A,O,A,AB,B,A,O,B,A,B,A Prepare a frequency distribution table for the data.

The blood groups of 30 students of class IX are recorded as follows: A B O O AB O A O B A O B A O O A AB O A A O O AB B A O B A B O A student is selected at random from the class from blood donation. Find the probability that the blood group of the student chosen is: (i) A (ii) B (iii) AB (iv) O

The blood group of 30 students of class IX are recorded as follows.A,B,B,B,O,B,B,A,A,B,A,O,AB,O AB,AB,B,AB,B,A,O,AB,B,A,O,A,B,A,A,AB. .(a) Make a frequency distribution table for the above data. (b)Mr 'X' meets an accident and needs blood, His blood group is AB. How many of these students are universal Donars and how many are universal Receipent.

The choices of the fruits of 42 students in a class are as follows: A, O , B , M , A , G , B , G , A , G , B , M , A , G , M , A , B , G , M , B , A , O , M , O , G , B , O , M , G , A , A , B , M , O , M , G , B , A , M , O ,M,O, Where A, B, G, M and O stand for the fruits Apple, Banana, Grapes, Mango and Orange respectively. Which two fruits are liked by an equal number of students?

If AB=O then

Human body groups A,B,AB and O are examples of