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M: +2.50/-0.83

In the sequence 1, 5, 7, 3, 5, 7, 4, 3, 5, 7, how many such 5s are there which are not immediately preceded by 3 but are immediately followed by 7?

[Paper II (CSAT) Analysis 2019]
A
B
C
D

EXPLANATION

Answer is (a).In the given sequence 1, 5, 7, 3, 5, 7, 4, 3, 5, 7, there is only ...
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