A survey conducted among 480 students of two colleges C1 and C2 reg – McqOptions

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1.	A survey conducted among 480 students of two colleges C1 and C2 regarding the type of computers they use, resulted in the following table, with partial information. It is known that the ratio of number of students of C1 and that of C2 is 9 : 7 :CollegeDesktopLaptopBothNoneC1---15C2120-30-Total-1957040 How many students of college C1 have at most one system ?
A.	195
B.	90
C.	255
D.	315
Answer» B. 90

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