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An experiment consists of boy girl composition of families with 2 children. i. What is the sample space if we are interested in knowing whether it is a boy or girl in the order of their births? ii. What is the sample space if we are interested in the number of boys in a family?

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The correct Answer is:
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(i)When the child boy is B and girl is `G` then sample space `={BB,BG,GB,GG}`
(ii) Here no, of girls in first family `=0`
No. of girls in second family `=1`
No. of girls in third family `=1`
No. of girls in fourth family `=2`
`:.` For the number of girls
sample space `={0,1,2}`
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NAGEEN PRAKASHAN ENGLISH-PROBABILITY-NCERT QUESTIONS
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