From a seven-member dance group, five will be chosen at random to volunteer at a youth dance event. If Kori and Jason are two of the seven members, what is the probability that both will be chosen to volunteer?	Choose the most appropriate option:	A) a) 1/21	B) b) 1/7	C) c) 40/7	D) d) 2/7	E) e) 3/7
Total number of ways to choose 5 out of 7 = 7C5 = 7/4.   Number of ways to choose 2 (any but Kori and Jason) out of 5 (excluding Kori and Jason) = 5C2 = 10.   P = favorable/total = 10/(7/4) = 40/7.   Answer: c) 40/7.
<result>C</result>
From a seven-member dance group, five will be chosen at random to volunteer at a youth dance event. If Kori and Jason are two of the seven members, what is the probability that both will be chosen to volunteer?