An examination paper which is divided into 2 groups consisting of 3 and 4 questions respectively, carries the note:"It is not necessary to answer all questions. One question must be answered from each group."In how many ways can an examinee select the questions?

3 years ago

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Answers : (1)

                    

number of way can group1 question be selected =3C1


number of way cab group2 question be selected =4C1


numeber of way can both be selected simultaneously =3C1*4C1=4*3=12 ANSWER

3 years ago

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