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There are 8 boys and 4 girls in a lift, What is the probabil...
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There are 8 boys and 4 girls in a lift, What is the probability that the first person who steps out of the lift will be a boy

A. 3/4

B. 1/3

C. 2/3

D. 1/4

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University of Lagos Nigeria
02 May 2020

james_mark
2/3
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University of Benin Nigeria
14 August 2020
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probability of that the first person who steps out will be a boy, Pr(B) = number of boys in the lift/total number people in the lift

number of boys = 8

Total number = number of boys + number of girls

Total number = 8 + 4 = 12

Therefore,

Pr(B) = 8/12

= 2/3

Ans C

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peter, University of Lagos
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