CBSE Class 10 Maths (Basic) 2023 · Paper 430/1/1 · Question 38

Probability 4 marks Medium

Blood group describes the type of blood a person has. It is a classification of blood based on the presence or absence of inherited antigenic substances on the surface of red blood cells. Blood types predict whether a serious reaction will occur in a blood transfusion. In a sample of

50

people,

21

had type O blood,

22

had type A,

5

had type B and the rest had type AB blood group. Based on the above, answer the following questions.

(i)What is the probability that a person chosen at random had type O blood?[1]
(ii)What is the probability that a person chosen at random had type AB blood group?[1]
(iii)What is the probability that a person chosen at random had neither type A nor type B blood group?[2]
(iii OR)What is the probability that a person chosen at random had either type A or type B or type O blood group?[2]

Answer

(i)

\frac{21}{50}

; (ii)

\frac{1}{25}

; (iii)

\frac{23}{50}

; (iii OR)

\frac{24}{25}

🔒 Step-by-step solution

From the board paper

CBSE Class 10 Maths (Basic) 2023 · Paper 430/1/1, Question 38 — all 38 questions with answers →

CBSE Class 10 Maths (Basic) 2023 · Paper 430/1/1 · Question 38

Answer

From the board paper

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