Posted by **Anonymous** on Saturday, November 8, 2008 at 9:01pm.

paul orders a pizza. chef carl randomly chooses two different toppings to put on the pizza from the following:~ pepperoni, onion, sausage, mushrooms and anchovies.

if paul does not eat pizza with mushrooms, determine the probablity that paul will not eat the pizza that chef carl made.

is it 1/5????

- maths please check my answer -
**drwls**, Saturday, November 8, 2008 at 11:21pm
There are 5!/(2!*3!) = 120/12 = 10 ways of picking two toppings from five. There are 4 two-topping combinations that do have mushrooms.

Therefore the chances of there being mushrooms on the pizza are 2 in 5.

- chemistry -
**sara**, Friday, November 14, 2008 at 10:28pm
Given that S is the central atom, draw a Lewis structure of OSF4 in which the formal charges of all atoms are

help ?

- chemistry -
**sara**, Friday, November 14, 2008 at 10:29pm
Given that S is the central atom, draw a Lewis structure of OSF4 in which the formal charges of all atoms are

help ?

- chemistry -
**glen**, Wednesday, May 6, 2009 at 1:48am
single bonds on all S to F's, double bond on S to O. Then count valence electrons and add appropriately.

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