The organizer of a conference is selecting workshops to include. She will select from 9 workshops about chemistry and 8 workshops about biology. In how many ways can she select 8 workshops if 7 or more must be about chemistry?(If necessary, consult a list of formulas.)

A committee of 5 members is going to be formed from 3 Trainers, Four Professors and 6 Research Associates. How many ways can they be selected, if- in committee, there are 2 Trainers and three Research Associates?

A university student is selecting courses for his next semester. He can choose from 3 humanities courses and 10 science courses. In how many ways can he choose 7 courses if 2 or fewer must be humanities courses?

There are 20 students taking Econ and 12 students taking Chem. If there are 8 students taking both Econ and Chem, find the total number of students taking Econ or Chem in the group.

Select the correct answer There are Seven Committee in a college viz., Academic, Alumni, Business, Cultural, Hostel, Placement and Sports. The Academic Committee meets every second day, the Alumni Committee meets every third day, the Business Committee meets every fourth day, the Cultural Committee meets every fifth day and the Hostel Committee meets every sixth day, the Placement Committee meets every Eighth day and the Sports Committee meets every Tenth day. How many times all the Seventh Committee do meets on the same day within days? radio_button_unchecked 12 radio_button_unchecked 9 radio_button_unchecked 6 radio_button_unchecked 3

Answer the questions below.(If necessary, consult a list of formulas.)(a) How many different committees of size 4 can be formed from 14 people?(b) From the 12 albums released by a musician, the recording company wishes to release 9 in a boxed set. How many different boxed sets are possible?