1.

How many 7's are there in the following series which are immediately preceded by 5 and followed by 4? 1 5 7 3 4 7 5 7 4 8 5 7 4 3 2 1 7 7 1 5 7 9 1 7 4

A.  2                            
B.                         4                            
C.                         3                            
D.                         5
Answer» B.                         4                            


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