Out of 10 students in a class, 4 are from Maharashtra, 3 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 option:	A) 1/3	B) 4/9	C) 5/6	D) 3/7	E) 1/4
Total possible ways of selecting 4students out of 10= 105/64 = (10*9*8*7)/(4*3*2*1)= 
<gadget id="calculator">(10*9*8*7)/(4*3*2*1)</gadget>
<output>210</output>
210   The number of ways of selecting a 4 students in which no student belongs to Karnataka= 75/64   Number of ways of selecting atleast one student from Karnataka = 155/64-75/64 = 175   Probability = 175/210 = 5/6   Answer is 5/6
<result>C</result>
Out of 10 students in a class, 4 are from Maharashtra, 3 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?