To answer these questions, study the following arrangement of digits, letters and symbols carefully.
$6, N,P ,=,@, 7,1 ,\&, R, T, 3, L, ,B, \star, E ,4,\# , 8, G,H ,\$, 5, K,M ,?, 2, D,C$
How many such digits are there in the arrangement each of which is immediately followed by a symbol but not immediately preceded by a letter?
Nil
Three
One
Four
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