Out of 15 students in a class, 7 are from Maharashtra, 5 are from Karnataka, and 3 are from Goa. Four students are to be selected at random. What are the chances that at least one is from Karnataka?	Choose the correct choice from the following answers:
A) 12/13  B) 11/13  C) 10/15  D) 1/15  E) 4/14
Total possible ways of selecting 4students out of 15 = 15C4 = (15*14*13*12)/(4*3*2*1)= 
<gadget id="calculator">(15*14*13*12)/(4*3*2*1)</gadget>
<output>1_365</output>
1365   The number of ways of selecting a 4 students in which no student belongs to Karnataka= 10C4   Number of ways of selecting atleast one student from Karnataka = 15C4-10C4 = 1155   Probability = 1155/1365 = 11/13   Answer is 11/13
<result>B</result>
Out of 15 students in a class, 7 are from Maharashtra, 5 are from Karnataka, and 3 are from Goa. Four students are to be selected at random. What are the chances that at least one is from Karnataka?