CBSE Class 10 Maths (Basic) 2024 · Paper 430/5/1 · Question 36

Probability 4 marks Very hard

F ami l y s t r u c t u r e :

In a recent survey of this year, 51% of the families had no children, 20% had one child, 19% had two children, 7% had three children and 3% had four or more children. A family is selected at random.

(i)Find the probability that the selected family has two or three children.[1]
(ii)Find the probability that the selected family has more than one child.[1]
(iii)(a)Find the probability that the selected family has less than three children.[2]
(iii)(b)Find the probability that the selected family has more than two children. (OR)[2]

Answer

(i)

P (two or three) = \frac{26}{100} = \frac{13}{50} = 0.26

; (ii)

P (more than one) = \frac{29}{100} = 0.29

; (iii)(a)

P (less than three) = \frac{90}{100} = \frac{9}{10} = 0.9

; (iii)(b)

P (more than two) = \frac{10}{100} = \frac{1}{10} = 0.1

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CBSE Class 10 Maths (Basic) 2024 · Paper 430/5/1, Question 36 — all 38 questions with answers →

CBSE Class 10 Maths (Basic) 2024 · Paper 430/5/1 · Question 36

Answer

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