CBSE Class 10 Maths (Standard) 2023 · Paper 30/2/1 · Question 38

Probability 4 marks Medium

Computer-based learning (CBL) refers to any teaching methodology that makes use of computers for information transmission. At an elementary school level, computer applications can be used to display multimedia lesson plans. A survey was done on

1000

elementary and secondary schools of Assam and they were classified by the number of computers they had. One school is chosen at random. Then answer the following questions:

Survey of 1000 schools by number of computers
Number of Computers	1 - 10	11 - 20	21 - 50	51 - 100	101 and more
Number of Schools	250	200	290	180	80

(i)Find the probability that the school chosen at random has more than $100$ computers.[1]
(ii)(a)Find the probability that the school chosen at random has $50$ or fewer computers.[2]
(ii)(b)Find the probability that the school chosen at random has no more than $20$ computers.[2]
(iii)Find the probability that the school chosen at random has $10$ or less than $10$ computers.[1]

Answer

(i)

\frac{2}{25}

; (ii)(a)

\frac{37}{50}

; (ii)(b)

\frac{9}{20}

; (iii)

\frac{1}{4}

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From the board paper

CBSE Class 10 Maths (Standard) 2023 · Paper 30/2/1, Question 38 — all 38 questions with answers →

CBSE Class 10 Maths (Standard) 2023 · Paper 30/2/1 · Question 38

Answer

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