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CBSE Class 12-commerce Answered

from a group of 4 engineers, 3 economic and 2 statisticians a committee of 3 persons is to be selected. find the probability that 1)committee has 1 member 2)exactly 1 engineer and 2 economists
Asked by kharatsrushti572 | 13 May, 2023, 07:59: PM
answered-by-expert Expert Answer
Total persons = 9
Committee of 3 members can be formed in C presuperscript 9 subscript 3 ways.
2) 1 engineer can be selected in C presuperscript 4 subscript 1 ways.
2 economist can be selected in C presuperscript 3 subscript 2 ways.
Therefore, probability that exactly 1 engineer and 2 economist can be selected 
equals fraction numerator C presuperscript 4 subscript 1 cross times C presuperscript 3 subscript 2 over denominator C presuperscript 9 subscript 3 end fraction
equals 1 over 7
 
*Part (1) question is incomplete.
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