The figure above shows the dimensions of a semicircular cross section of a one-way tunnel.The single traffic lane is 12 feet wide and is equidistant from the sides of the tunnel.If vehicles must clear the top of the tunnel by at least ½ foot when they are inside the traffic lane, what should be the limit on the height of vehicles that are allowed to use the tunnel?
A.5½ ft
B.7½ ft
C.8 ½ ft
D.9½ ft
E.10 ft
Q26:
There are 8 books on a shelf, of which 2 are paperbacks and 6 are hardbacks.How many possible selections of 4 books from this self include at least one paperback?
A.40
B.45
C.50
D.55
E.60
Q31:
There are 8 magazines lying on a table; 4 are fashion magazines and the other 4 are sports magazines.If 3 magazines are to be selected at random from the 8 magazines, what is the probability that at least one of the fashion magazines will be selected?
A.1/2
B.2/3
C.32/35
D.11/12
E.13/14
The figure above shows the dimensions of a semicircular cross section of a one-way tunnel.The single traffic lane is 12 feet wide and is equidistant from the sides of the tunnel.If vehicles must clear the top of the tunnel by at least ½ foot when they are inside the traffic lane, what should be the limit on the height of vehicles that are allowed to use the tunnel?
A.5½ ft
B.7½ ft
C.8 ½ ft
D.9½ ft
E.10 ft
Q26:
There are 8 books on a shelf, of which 2 are paperbacks and 6 are hardbacks.How many possible selections of 4 books from this self include at least one paperback?
A.40
B.45
C.50
D.55
E.60
Q31:
There are 8 magazines lying on a table; 4 are fashion magazines and the other 4 are sports magazines.If 3 magazines are to be selected at random from the 8 magazines, what is the probability that at least one of the fashion magazines will be selected?
