Given:-Number of professors=10Number of lecturers=20=10C2.20C3=9C1.20C3=10C2.19C2=10C2.19C3Answer is above in table

Q. 625.0( 2 Votes )

There are 10 prof

Answer :

Given:-

Number of professors=10

Number of lecturers=20

=¹⁰C₂.²⁰C₃

=⁹C₁.²⁰C₃

=¹⁰C₂.¹⁹C₂

=¹⁰C₂.¹⁹C₃

Answer is above in table

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