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How many 1's are there in the following ...

How many 1's are there in the following series, each of which is immediately preceded by an even number but not immediately followed by a prime number?
2 6 3 1 4 6 1 2 7 5 4 1 8 1 6 5 2 1 3 4 7 6 1 4 5

A

3

B

4

C

2

D

5

Text Solution

Verified by Experts

The correct Answer is:
A
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