Students are in cultural program as follows: music-10, Dance-15, and skits -6. No student is in all three cultural program , but 4 are in both music and Dance, 3 are in both music and skits, and 2 are in Dance and skits.
How many different students are in at least one of the three cultural program?	Choose one:	A) 34	B) 28	C) 26	D) 22	E) 18
Total students = M + D + S - (sum of 2-group overlaps) + (all three)   Total students = 10 + 15 + 6 - (3 + 4 + 2) + 0= 
<gadget id="calculator">10 + 15 + 6 - (3 + 4 + 2) + 0</gadget>
<output>22</output>
22 students.   Answer is 22
<result>D</result>
Students are in cultural program as follows: music-10, Dance-15, and skits -6. No student is in all three cultural program , but 4 are in both music and Dance, 3 are in both music and skits, and 2 are in Dance and skits.
How many different students are in at least one of the three cultural program?