Question 2359
1. 
nickel = n
dime = d
quarter = q

P(n) = 3 nickels out of 11 coins = 3/11
P(d) = 2 dimes out of 11 coins = 2/11
P(q) = 6 quarters out of 11 coins = 6/11

2.
Draw a little table of the 2 dice values and their sums (hope this comes out ok on here)...

___1_2_3__4__5__6
-----------------
1|_2_3_4__5__6__7
2|_3_4_5__6__7__8
3|_4_5_6__7__8__9
4|_5_6_7__8__9_10
5|_6_7_8__9_10_11
6|_7_8_9_10_11_12

Looking at this, there are a total of 36 outcomes, so...

P(11) = 2/36 = 1/18
P(7)  = 6/36 = 1/6
P(13) = 0

jon