Monday

April 21, 2014

April 21, 2014

Posted by **Penelope** on Thursday, February 21, 2013 at 4:15am.

a. any of the mathematicians and scientists are included?

b. one particular scientist must be in the committee?

c. two particular mathematicians must be int he committee?

d. two particular scientists must not be int he committee?

- Math -
**Reiny**, Thursday, February 21, 2013 at 8:18ama) number of (2math, 3 science() = C(4,2) x C(6,3) =120

b) one specific scientist must be in, so need 2 other scientist

= C(4,2) x C(6,2) = 90

c) 2 specific math guys must be in, but we need only 2 maths, so only need the 3 science

= C(6,3) = 20

d) 2 specific science guys are out, so need 3 from remaining 4 science guys

= C(4,2) x C(4,3) = 24

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